RFHJ0C23–Coloured scanning electron micrograph (SEM) of an uncut sapphire. Sapphire is a typically blue gemstone variety of the mineral corundum (aluminium oxide). Sapphire is very dense and very hard. Non-gem quality sapphire is often used as an industrial abrasive, or as scratch-resistant glass. Magnification: x130 when shortest axis printed at 25 millimetres.
RFHJ0BTR–Coloured transmission electron micrograph (TEM) of Zika virus particles (red) isolated in kidney epithelial cells (Vero E6 cells).Zika viruses have dense core surrounded by envelope (40nm size).Zika virus is RNA (ribonucleic acid) virus in family Flaviviridae causes Zika fever,or Zika disease.Aedes
RFHJ0BR9–Coloured scanning electron micrograph (SEM) of Table sugar (sucrose) crystals. Sucrose, or common table sugar (also called saccharose), is a disaccharide that consists of two component monosaccharidesglucose and fructose. It is best known for its role in human nutrition and is formed by plants but not by higher organisms. It is commonly used as a sweetener. Magnification: x61 when shortest axis printed at 25 millimetres.
RFHJ0BFN–Waterlily pollen (Nymphaea mexicana),coloured scanning electron micrograph (SEM).Nymphaea mexicana is species of aquatic plant in family Nymphaeaceae.It is native to Southern United States Mexico.Common names include: yellow waterlily,Mexican waterlily banana waterlily.Nymphaea mexicana is best
RFHJ0BNB–Coloured scanning electron micrograph (SEM) of White bread surface.Shown here is slice of white sandwich bread,revealing large airspaces that develop as result of action of yeast.White bread made from wheat flour that has bran germ removed through process known as milling.Milling gives white flour
RFHJ0BPY–Coloured scanning electron micrograph (SEM) of Edge of a new razor blade (seamless double edge). A razor blade is a thin, sharp-edged piece of steel that can be fitted into a razor. It is used for shaving body hair. Magnification: x575 when shortest axis printed at 25 millimetres.
RFHJ0BH3–Foxglove seed surface (Digitalis purpurea),coloured scanning electron micrograph (SEM).This image shows seed coat (or testa) of foxglove seed (Digitalis purpurea).The testa has irregular honeycomb-like structure.The purpose of seed coat structure is to enhance seed germination.The seed coat traps
RFHJ0BNE–Coloured scanning electron micrograph (SEM) of Breakfast food (cereal) corn flake. Corn kernels (from corn plants, Zea mays) are ground and processed in to flat sheets. They are then cooked to form corn flakes. Corn flakes are a common breakfast food (cereal) that has a high dietary fibre content. Magnification: x9 when shortest axis printed at 25 millimetres.
RFHJ0BFW–Conductive vessel element in mountain mahogany wood (Cercocarpus sp),coloured scanning electron micrograph (SEM).Note bordered pits in cellulose wall.A conductive vessel element is elongated,water-conducting cell in xylem,one of two kinds of tracheary elements.The cells die when mature,leaving only
RFHJ0BK5–Coloured scanning electron micrograph (SEM) Chicken eggshell cross section (Gallus gallus domesticus).Shown from left to right in image.hard mineralized eggshell inner fibrous membrane.The hard mineralized eggshell contains calcium carbonate (CaCO3) mineral crystals that form many tiny pores in
RFHJ0BMA–Coloured scanning electron micrograph (SEM) of Computer chip (microchip, microprocessor, integrated circuit) surface. Microchips are solid-state silicon semiconductor components that can process large amounts of data. They are the central part of devices such as computers. This integrated circuit has been made by imprinting microscopic electronic components onto the surface of a wafer of silicon. Integrated circuits can be made much smaller than non-integrated circuits. Magnification: x30 when shortest axis printed at 25 millimetres.
RFHJ0BN0–Coloured scanning electron micrograph (SEM) of Tack nail.Tacking nails are often used for carpet attachment to wood flooring.A nail is pin-shaped,sharp object of hard metal (typically steel) used as fastener.Nails for specialized purposes may also be made of stainless steel,brass or aluminium.Nails
RFHJ0BJE–Coloured scanning electron micrograph (SEM) Chicken eggshell inner membrane (Gallus gallus domesticus).Shown here is eggshell inner membrane that is composed of protein fibres (internal attached to hard eggshell).Several membranes are found around embryo of bird egg.The inner eggshell membrane
RFHJ0BT9–Coloured scanning electron micrograph (SEM) of House dust. Components such as fibre, hair, pollen, insect faecal matter and scale (animal dander) cause allergic reactions in sensitive humans. Dust in homes contains small amounts of plant pollen, human and animal hairs, textile fibres, paper fibres, insect parts, minerals from outdoor soil, human skin cell, sand many other materials which may be found in the local environment. Magnification: x26 when shortest axis printed at 25 millimetres.
RFHJ0C0P–Coloured scanning electron micrograph (SEM) of Komagataella phaffii - methylotrophic yeast.Komagataella phaffii is newly identified yeast that has methanol-assimilating capabilities.It can use methanol as sole carbon source when glycerol or glucose is not found as food source.Shown hear are yeast
RFHJ0BE6–Coloured scanning electron micrograph (SEM) of brewer's yeast (Saccharomyces cerevisiae).Saccharomyces cerevisiae,also known as Baker's yeast,is species of budding yeast.It is perhaps most widely used yeast has been used since ancient times in baking brewing.It is used in beer production,bread
RFHJ0BDH–Coloured scanning electron micrograph (SEM) of common environmental allergenic mould (Cladosporium sp.); fungal hyphae producing spores.Also known as Hormodendrum sp.This specimen was found on inner surface of building's air supply duct.This genus is most common outdoor airborne mould but may occur
RFHJ0BEW–Coloured scanning electron micrograph (SEM) of Swallowtail butterfly wing scales (Papilio rutulus).The western tiger swallowtail (Papilio rutulus) is common swallowtail butterfly in family Papilionidae.It is prominent in western North America seen in urban parks,gardens,rural woodlands riparian
RFHJ0BBR–Coloured scanning electron micrograph (SEM) of Streptococcus pneumoniae , Gram-positive, encapsulated, coccus prokaryote (dividing). Causes (lower respiratory infection) pneumonia and (upper respiratory infections) bronchitis, laryngitis, otitis media (middle ear) and sinusitis. Bacillus sp., rod prokaryote; causes skin and wound infections. Magnification: x6, 000 when shortest axis printed at 25 millimetres.
RFHJ0B9M–Coloured scanning electron micrograph (SEM) of Photocomposite,E.coli on surface of human skin.Escherichia coli is Gram-negative,facultatively anaerobic,enteric,rod prokaryote.This bacterium is normally part of human animal microbiota.Most E.coli strains are harmless,but some strains can cause serious problems such as: food poisoning,urinary tract infections,traveller's diarrhoea nosocomial infections.The E.coli 0157:H7 strain is fatal to humans if contracted when contaminated meat is cooked inadequately.Magnification: bacteria x200; skin x200 when shortest axis printed at 25 millimetres.
RFHJ0C2G–Coloured scanning electron micrograph (SEM) of Staphylococcus warneri, coccoid, Gram-positive prokaryote. Staphylococcus warneri is a common commensal bacterium found on the skin of humans and animals. It is a coagulase-negative Staphylococcus sp. that rarely causes disease but it may cause infection in immunocompromised patients. It occasionally has been associated with cases of septicaemia and bacteraemia. Staphylococcus warneri is sensitive to the antibiotic, vancomycin. Magnification: x6, 000 when shortest axis printed at 25 millimetres.
RFHJ0BBT–Coloured scanning electron micrograph (SEM) of Streptococcus pneumoniae , Gram-positive, encapsulated, coccus prokaryote (dividing). Causes (lower respiratory infection) pneumonia and (upper respiratory infections) bronchitis, laryngitis, otitis media (middle ear) and sinusitis. Bacillus sp., rod prokaryote; causes skin and wound infections. Magnification: x6, 000 when shortest axis printed at 25 millimetres.
RFHJ0B91–Coloured scanning electron micrograph (SEM) of centric fossil diatom frustule (Stephanodiscus sp.).This fresh water diatom frustule came from deposits found at Kalamath Falls,Oregon.This freshwater centric diatom is found in fresh water streams,ponds lakes.Diatoms are type of algae
RFHJ0BAW–Coloured scanning electron micrograph (SEM) of Photocomposite, E. coli on the surface of human skin. Escherichia coli, Gram-negative, facultatively anaerobic, rod prokaryote. E. coli is part of human and animal microbiota. It can cause urinary tract infections, traveller's diarrhoea and nosocomial infections. Shown in this image is human skin (epidermis) with a bacteria density of 100 bacteria per square millimetre. Magnification: bacteria x200; skin x200 when shortest axis printed at 25 millimetres.
RFHJ0BCB–Coloured scanning electron micrograph (SEM) of Bacillus cereus,Gram-positive,encapsulated,rod prokaryote (vegetative stage,dividing); causes food poisoning diarrhea.Bacillus cereus,Gram-positive,encapsulated,rod prokaryote; causes food poisoning diarrhoea.It is motile,beta haemolytic bacterium
RFHJ0C0X–Coloured scanning electron micrograph (SEM) of Escherichia coli is a Gram-negative, facultatively anaerobic, enteric, rod prokaryote. This bacterium was isolated from the human intestine and is normally a part of the human and animal microbiota. Most E. coli strains are harmless, but some strains can cause serious problems such as: food poisoning, urinary tract infections, traveller's diarrhoea and nosocomial infections. The E. coli 0157:H7 strain is fatal to humans if contracted when contaminated meat is cooked inadequately. Magnification: x2, 225 when shortest axis printed at 25 millimetres.
RFHJ0C0R–Coloured scanning electron micrograph (SEM) of Escherichia coli is a Gram-negative, facultatively anaerobic, enteric, rod prokaryote. This bacterium was isolated from the human intestine and is normally a part of the human and animal microbiota. Most E. coli strains are harmless, but some strains can cause serious problems such as: food poisoning, urinary tract infections, traveller's diarrhoea and nosocomial infections. The E. coli 0157:H7 strain is fatal to humans if contracted when contaminated meat is cooked inadequately. Magnification: x2, 225 when shortest axis printed at 25 millimetres.
RFHJ0C1N–Coloured scanning electron micrograph (SEM) of Dust mite (Dermatophagoides sp.).Millions of dust mites inhabit home,feeding on dead human skin that are common in house dust.The mite's body is in three parts: gnathosoma (head region) adapted for feeding on dead skin,the propodosma (carrying 1st 2nd
RFHJ0BAX–Coloured scanning electron micrograph (SEM) of Escherichia coli is a Gram-negative, facultatively anaerobic, enteric, rod prokaryote. This bacterium was isolated from the human intestine and is normally a part of the human and animal microbiota. Most E. coli strains are harmless, but some strains can cause serious problems such as: food poisoning, urinary tract infections, traveller's diarrhoea and nosocomial infections. The E. coli 0157:H7 strain is fatal to humans if contracted when contaminated meat is cooked inadequately. Magnification: x2, 445 when shortest axis printed at 25 millimetres.
RFHJ0C1D–Coloured scanning electron micrograph (SEM) of Dust mite (Dermatophagoides sp.).Millions of dust mites inhabit home,feeding on dead human skin that are common in house dust.The mite's body is in three parts: gnathosoma (head region) adapted for feeding on dead skin,the propodosma (carrying 1st 2nd
RFHJ0BC6–Coloured scanning electron micrograph (SEM) of Pseudomonas aeruginosa, Gram-negative, aerobic, enteric, rod prokaryote (dividing). This bacterium produces a blue, Green pigment, pyocyanin, which characterizes the bluish pus produced by the infection. It is found in soil, water, skin flora, and most man-made environments throughout the world. Magnification: x2, 400 when shortest axis printed at 25 millimetres.
RFHJ0BWP–Human red blood cells platelets,composite coloured scanning electron micrograph (SEM).Human red blood cells (RBCs),or erythrocytes,are involved in delivering oxygen to body tissue.The cytoplasm of RBCs is rich in haemoglobin,an iron-containing biomolecule that can bind oxygen is responsible for red
RFHJ0B77–Human tooth fractured enamel,coloured scanning electron micrograph (SEM).Fracture in tooth revealing enamel rod morphology.Tooth enamel is highly mineralized covering of crown of tooth.It is hardest most highly mineralized substance of body.Ninety-six percent of enamel consists of mineral,with
RFHJ0B6N–Activated platelets channels of open canalicular system (OCS),coloured scanning electron micrograph (SEM).Platelets are blood cell fragments that play essential role in blood clotting wound repair,and can also activate certain immune responses.They are formed in red bone marrow,lungs,and spleen by
RFHJ0B8F–Radiolarian test (marine),coloured scanning electron micrograph (SEM).The hard skeleton is composed of silica or strontium sulphate.The Radiolaria (also called Radiozoa) are protozoa that produce intricate mineral skeletons.They are found as zooplankton throughout ocean their skeletal remains make
RFHJ0BYX–Human hair shafts from head,coloured scanning electron micrograph (SEM).The outer layer of hair (the cuticle) has overlapping scales of keratin.These scales are thought to prevent hairs from matting together.Hair is made up of fibrous protein called keratin.Internally hair shaft is divided into three concentric sheaths (layers) called medulla,cortex outer cuticle.Hair is non-living tissue.Hair grows from hair root (bulb) embedded in skin.Hair growth occurs when epidermal cells divide at base of root bulb.Hair is non-living tissue.Magnification: X6 when shortest axis printed at 25 millimetres.
RFHJ0B61–Cotton bud with ear wax embedded in fibres, coloured scanning electron micrograph (SEM). A cotton bud is a small stick with a cotton swab at one or both ends. It is used as a cleaning tool for ears but has many other uses including beauty, cosmetics, household cleaning, pet care, baby care, cleaning surfaces all types of surfaces and first aid. Magnification: x34 when shortest axis printed at 25 millimetres.
RFHJ0C01–Human hair shafts from head,coloured scanning electron micrograph (SEM).The outer layer of hair (the cuticle) has overlapping scales of keratin.These scales are thought to prevent hairs from matting together.Hair is made up of fibrous protein called keratin.Internally hair shaft is divided into three concentric sheaths (layers) called medulla,cortex outer cuticle.Hair is non-living tissue.Hair grows from hair root (bulb) embedded in skin.Hair growth occurs when epidermal cells divide at base of root bulb.Hair is non-living tissue.Magnification: X6 when shortest axis printed at 25 millimetres.
RFHJ0B6D–Human hair dandruff,coloured scanning electron micrograph (SEM).The outer layer of hair (the cuticle) has overlapping scales of keratin.These scales are thought to prevent hairs from matting together.Hair is made up of fibrous protein called keratin.Internally hair shaft is divided into three concentric sheaths (layers) called medulla,cortex outer cuticle.Hair is non-living tissue.Hair grows from hair root (bulb) embedded in skin.Hair growth occurs when epidermal cells divide at base of root bulb.Hair is non-living tissue.Magnification: x115 when shortest axis printed at 25 millimetres.
RFHJ0C2M–Human hair dandruff,coloured scanning electron micrograph (SEM).The outer layer of hair (the cuticle) has overlapping scales of keratin.These scales are thought to prevent hairs from matting together.Hair is made up of fibrous protein called keratin.Internally hair shaft is divided into three concentric sheaths (layers) called medulla,cortex outer cuticle.Hair is non-living tissue.Hair grows from hair root (bulb) embedded in skin.Hair growth occurs when epidermal cells divide at base of root bulb.Hair is non-living tissue.Magnification: x115 when shortest axis printed at 25 millimetres.
RFHJ0C1Y–Coloured scanning electron micrograph (SEM) of an uncut sapphire. Sapphire is a typically blue gemstone variety of the mineral corundum (aluminium oxide). Sapphire is very dense and very hard. Non-gem quality sapphire is often used as an industrial abrasive, or as scratch-resistant glass. Magnification: x130 when shortest axis printed at 25 millimetres.
RFHJ0BW5–Coloured scanning electron micrograph (SEM) of an uncut sapphire. Sapphire is a typically blue gemstone variety of the mineral corundum (aluminium oxide). Sapphire is very dense and very hard. Non-gem quality sapphire is often used as an industrial abrasive, or as scratch-resistant glass. Magnification: x150 when shortest axis printed at 25 millimetres.
RFHJ0BTE–Coloured transmission electron micrograph (TEM) of Zika virus particles (orange) isolated in kidney epithelial cells (Vero E6 cells).Zika viruses have dense core surrounded by envelope (40nm size).Zika virus is RNA (ribonucleic acid) virus in family Flaviviridae causes Zika fever,or Zika
RFHJ0BW3–Coloured scanning electron micrograph (SEM) of an uncut sapphire. Sapphire is a typically blue gemstone variety of the mineral corundum (aluminium oxide). Sapphire is very dense and very hard. Non-gem quality sapphire is often used as an industrial abrasive, or as scratch-resistant glass. Magnification: x150 when shortest axis printed at 25 millimetres.
RFHJ0BHY–Coloured scanning electron micrograph (SEM) Chicken eggshell surface (Gallus gallus domesticus).Shown here are surface mineral crystals that form many tiny pores in bird eggshell.Eggshells are outer covering of hard-shelled eggs of other eggs soft outer coats.Eggshell structure varies widely among
RFHJ0BHK–Coloured scanning electron micrograph (SEM) Emu eggshell surface tiny pores (Dromaius novaehollandiae).Calcium carbonate crystals make up Emu eggshell.Bird eggshells are semipermeable membranes composed of mineralized calcium carbonate filled thousands of pores.The eggshell protects embryo inside
RFHJ0BH7–Coloured scanning electron micrograph (SEM) Pet dander: dog hair,cat hair dead skin.Dog cats produce human allergens.Pet dander is material shed from body of various animals (commonly cats dogs).It may contain scales of dried skin hair.Substances within dander can cause human allergies (allergic
RFHJ0BGM–Ragweed pollen (Ambrosia psilostachya),coloured scanning electron micrograph (SEM).This pollen is allergen.Ragweed is main cause of weed allergies.Ragweed pollen is notorious for causing allergic reactions in humans,specifically allergic rhinitis.Up to half of all cases of pollen-related allergic
RFHJ0BMM–Coloured scanning electron micrograph (SEM) of Tip of finish nail.A nail is pin-shaped,sharp object of hard metal (typically steel) used as fastener.Nails for specialized purposes may also be made of stainless steel,brass or aluminium.Nails are typically driven into material (typically wood) by hammer or by nail gun.A nail holds materials together by friction in vertical direction shear strength in lateral directions.One point of nail is also sometimes bent over or clinched to prevent it from pulling out.Magnification: x8 when shortest axis printed at 25 millimetres.
RFHJ0BRE–Coloured scanning electron micrograph (SEM) of Cotton t-shirt collar with dirt, etc. embedded in fibres. A T-shirt is a style of fabric shirt, named after the T shape of the body and sleeves. It is associated with short sleeves, a round neck line and no collar. T-shirts are generally made of cotton fibres knitted in a jersey stitch. They have a soft texture compared to woven shirts. The majority of modern t-shirts have a body made from a continuously woven tube so that the torso has no side seams. Magnification: x28 when shortest axis printed at 25 millimetres.
RFHJ0BGR–Ragweed (Ambrosia psilostachya) pollen,coloured scanning electron micrograph (SEM).This pollen is allergen.Ragweed is main cause of weed allergies.Ragweed pollen is notorious for causing allergic reactions in humans,specifically allergic rhinitis.Up to half of all cases of pollen-related allergic
RFHJ0BNW–Coloured scanning electron micrograph (SEM) of Surface of a random access memory chip (integrated circuit). A RAM chip (Random Access Memory) is the computer's temporary data storage. A RAM device allows data items to be accessed (read or written) in almost the same amount of time irrespective of the physical location of data inside the memory. Magnification: x63 when shortest axis printed at 25 millimetres.
RFHJ0C2Y–A blade of grass with serrated edge (Paspalum sp),coloured scanning electron micrograph (SEM).Plants evolve specialized physical chemical characteristics in natural defence against stresses in their environments.The sharp saw-toothed edge of blade of grass protects against herbivores.Paspalum is
RFHJ0C3D–Coloured scanning electron micrograph (SEM) of Pea aphid (Acyrthosiphon pisum) on a bean leaf with proboscis penetrating a vein. This insect transmits alfalfa mosaic virus (rhabdovirus) and pea enation mosaic (isometric) virus. Magnification: x13 when shortest axis printed at 25 millimetres.
RFHJ0BDW–Coloured scanning electron micrograph (SEM) of Candida albicans infected medical catheter.A common yeast,C.albicans can colonize catheters resulting in serious tissue infections.Shown here is inner surface of infected catheter (removed from patient) revealing yeast biofilm (Candida
RFHJ0BD1–Light micrograph (LM) of Vitamin B6 (pyridoxine) Vitamin B2 (riboflavin) crystals.Vitamin B6 is water-soluble vitamin that is needed for more than 100 enzymes involved in protein metabolism.It is also essential for red blood cell metabolism.The nervous immune systems need vitamin B6 to function
RFHJ0BD3–Light micrograph (LM) of Cholesterol crystals. A pearly, fat-like steroid alcohol, found in animal fats and tissues. Cholesterol can form lipid deposits (atheroma) on the inner walls of arteries, characteristic of atherosclerosis. Magnification: x40 when shortest axis printed at 25 millimetres.
RFHJ0C03–Coloured scanning electron micrograph (SEM) of Cotton aphid (Aphis gossypii) on an hibiscus leaf. Also called the melon aphid it is commonly associated with outbreaks on cotton in the Southeast. This insect has many generations per year and is often resistant to insecticides. This aphid carries an isometric virus which causes cucumber mosaic disease in cucumber and tobacco plants. Magnification: x11 when shortest axis printed at 25 millimetres.
RFHJ0C3G–Coloured scanning electron micrograph (SEM) of Komagataella phaffii - methylotrophic yeast.Komagataella phaffii is newly identified yeast that has methanol-assimilating capabilities.It can use methanol as sole carbon source when glycerol or glucose is not found as food source.Shown hear are yeast
RFHJ0BCX–Light micrograph (LM) of aspartame crystals.Aspartame is name for artificial,non-carbohydrate sweetener,Aspartyl-phenylalanine-1-methyl ester.It is 160 times sweeter than sugar (sucrose or saccharose),and is marketed under number of trademarked names,such as NutraSweet Equal.It is common sweetener
RFHJ0C08–Coloured scanning electron micrograph (SEM) of Pea aphid (Acyrthosiphon pisum) on a bean leaf with proboscis penetrating a vein. This insect transmits alfalfa mosaic virus (rhabdovirus) and pea enation mosaic (isometric) virus. Magnification: x26 when shortest axis printed at 25 millimetres.
RFHJ0BE9–Coloured scanning electron micrograph (SEM) of brewer's yeast (Saccharomyces cerevisiae).Saccharomyces cerevisiae,also known as Baker's yeast,is species of budding yeast.It is perhaps most widely used yeast has been used since ancient times in baking brewing.It is used in beer production,bread
RFHJ0C14–Coloured scanning electron micrograph (SEM) of Photocomposite,E.coli on surface of human skin.Escherichia coli is Gram-negative,facultatively anaerobic,enteric,rod prokaryote.This bacterium is normally part of human animal microbiota.Most E.coli strains are harmless,but some strains can cause serious problems such as: food poisoning,urinary tract infections,traveller's diarrhoea nosocomial infections.The E.coli 0157:H7 strain is fatal to humans if contracted when contaminated meat is cooked inadequately.Magnification: bacteria x800; skin x6 when shortest axis printed at 25 millimetres.
RFHJ0BC0–Coloured scanning electron micrograph (SEM) of Pseudomonas aeruginosa, Gram-negative, aerobic, enteric, rod prokaryote (dividing). This bacterium produces a blue, Green pigment, pyocyanin, which characterizes the bluish pus produced by the infection. It is found in soil, water, skin flora, and most man-made environments throughout the world. Magnification: x2, 400 when shortest axis printed at 25 millimetres.
RFHJ0C1B–Coloured scanning electron micrograph (SEM) of Dust mite (Dermatophagoides pteronyssinus).Millions of dust mites inhabit home,feeding on dead human skin that are common in house dust.The mite's body is in three parts: gnathosoma (head region) adapted for feeding on dead skin,the propodosma
RFHJ0BCA–Coloured scanning electron micrograph (SEM) of Bacillus cereus ,Gram-positive,encapsulated,rod prokaryote (vegetative spore stages); dividing.Causes food poisoning.Bacillus cereus,Gram-positive,encapsulated,rod prokaryote; causes food poisoning diarrhoea.It is motile,beta haemolytic bacterium
RFHJ0B9E–Coloured scanning electron micrograph (SEM) of salt water pennate diatom frustule (Navicula sp.).The genus Navicula is genus of boat-shaped,single cell,photosynthetic alga.It is pennate diatom that has silica skeleton (frustule).These microscopic unicellular plants are important biomass oxygen
RFHJ0BBM–Coloured scanning electron micrograph (SEM) of Streptococcus pneumoniae , Gram-positive, encapsulated, coccus prokaryote (dividing). Causes (lower respiratory infection) pneumonia and (upper respiratory infections) bronchitis, laryngitis, sinusitis, and otitis media (middle ear infection). Magnification: x4, 400 when shortest axis printed at 25 millimetres.
RFHJ0B9W–Coloured scanning electron micrograph (SEM) of Photocomposite,E.coli on surface of human skin.Escherichia coli is Gram-negative,facultatively anaerobic,enteric,rod prokaryote.This bacterium is normally part of human animal microbiota.Most E.coli strains are harmless,but some strains can cause serious problems such as: food poisoning,urinary tract infections,traveller's diarrhoea nosocomial infections.The E.coli 0157:H7 strain is fatal to humans if contracted when contaminated meat is cooked inadequately.Magnification: bacteria x800; skin x200 when shortest axis printed at 25 millimetres.
RFHJ0C2T–Coloured scanning electron micrograph (SEM) of Photocomposite,E.coli on surface of human skin.Escherichia coli is Gram-negative,facultatively anaerobic,enteric,rod prokaryote.This bacterium is normally part of human animal microbiota.Most E.coli strains are harmless,but some strains can cause serious problems such as: food poisoning,urinary tract infections,traveller's diarrhoea nosocomial infections.The E.coli 0157:H7 strain is fatal to humans if contracted when contaminated meat is cooked inadequately.Magnification: bacteria x200; skin x200 when shortest axis printed at 25 millimetres.
RFHJ0BA5–Coloured scanning electron micrograph (SEM) of Streptococcus thermophilus,Gram-positive,coccoid prokaryote (bacterium).Streptococcus thermophilus (also known as: Streptococcus salivarius subsp.thermophilus) is facultative anaerobe that belongs to group of lactic acid bacteria that convert lactose
RFHJ0B75–Used wax dental floss with cheek cells (orange) bacteria (blue) on dental floss fibres (brown),coloured scanning electron micrograph (SEM).Cheek cells often get scraped from inside of your mouth when flossing your teeth.Numerous bacteria are present as part of normal mouth flora.Bacterial plaque
RFHJ0B6Y–T lymphocytes (pre-T cells) granulocyte (neutrophil),coloured scanning electron micrograph (SEM).Lymphocytes are involved in specific immune response are composed mainly of precursor T cells (pre-T cells) B cells.Pre-T cells B cells are subsets of lymphocytes that originate in red bone marrow from
RFHJ0B87–Darkfield light micrograph of Paramecium bursaria,a ciliate protozoan,that contains endosymbiotic green algae (Chlorella sp.).Paramecium are found mainly in stagnant ponds,feeding on bacteria plant particles.They have permanent mouth called oral grove.Food taken in through oral groove is digested
RFHJ0B80–DIC light micrograph of Paramecium.(Paramecium multimicronuleatum),a ciliate protozoan,with oral groove,food vacuoles,nucleus (left edge) cilia.Paramecium are found mainly in stagnant ponds,feeding on bacteria plant particles.They have permanent mouth called oral grove.Food taken in through oral
RFHJ0B7R–Bacteria on an epithelial cell from the human tongue filiform papilla, coloured scanning electron micrograph (SEM). Coccoid bacteria (likely Streptococcus mutans due to the fibrous glucan matrix that surrounds the cells) and one rod bacterium are seen on the epithelial surface. Most bacteria on the human tongue are harmless or even beneficial. However some bacteria can cause throat infections and form plaque deposits on teeth. Plaque will also lead to tooth decay and periodontal disease. Magnification: x5, 000 when shortest axis printed at 25 millimetres.
RFHJ0B6E–Human tooth accumulation of bacterial plaque (smooth areas) calcified tartar (rough areas) on enamel surface,coloured scanning electron micrograph (SEM).Plaque is sticky,colourless film of bacteria that forms on teeth.You can sense this film due to your tongue feeling silky surface on your teeth.It
RFHJ0B6M–Activated platelets channels of open canalicular system (OCS),coloured scanning electron micrograph (SEM).Platelets are blood cell fragments that play essential role in blood clotting wound repair,and can also activate certain immune responses.They are formed in red bone marrow,lungs,and spleen by
RFHJ0BYK–Human hair shafts from head,coloured scanning electron micrograph (SEM).The outer layer of hair (the cuticle) has overlapping scales of keratin.These scales are thought to prevent hairs from matting together.Hair is made up of fibrous protein called keratin.Internally hair shaft is divided into three concentric sheaths (layers) called medulla,cortex outer cuticle.Hair is non-living tissue.Hair grows from hair root (bulb) embedded in skin.Hair growth occurs when epidermal cells divide at base of root bulb.Hair is non-living tissue.Magnification: X6 when shortest axis printed at 25 millimetres.
RFHJ0BXF–Human red blood cells trapped in fibrin blood clot,composite coloured scanning electron micrograph (SEM).Platelets in blood are small oval disks are termed nonactivated platelets or thrombocytes.Platelets serve as body's first line of defence to prevent excessive blood loss.When injury such as cut
RFHJ0BY8–Human hair (Caucasian,brunette),coloured scanning electron micrograph (SEM).The outer layer of hair (the cuticle) has overlapping scales of keratin.These scales are thought to prevent hairs from matting together.Hair is made up of fibrous protein called keratin.Internally hair shaft is divided into
RFHJ0B5F–Alveolar macrophage phagocytosis of E. coli (mammal lung pleural cavity), coloured scanning electron micrograph (SEM). Note the macrophage has short filopodia that extend from the cell and aid in finding bacteria for phagocytosis. A tissue macrophage is a large, mature phagocyte that can ingest and destroy invading microbes, foreign particles, cancerous or diseased cells and cellular debris. Alveolar (lung pleural cavity) macrophages are part of the reticuloendothelial system. Magnification: x925 when shortest axis printed at 25 millimetres.
RFHJ0B60–Alveolar macrophage phagocytosis of E. coli, coloured scanning electron micrograph (SEM). A red blood cell is in the periphery (mammal lung pleural cavity). Note the macrophage has short filopodia that extend from the cell and aid in finding bacteria for phagocytosis. A tissue macrophage is a large, mature phagocyte that can ingest and destroy invading microbes, foreign particles, cancerous or diseased cells and cellular debris. Alveolar (lung pleural cavity) macrophages are part of the reticuloendothelial system. Magnification: x825 when shortest axis printed at 25 millimetres.
RFHJ0BXT–Human red blood cells activated platelets trapped in fibrin blood clot,composite coloured scanning electron micrograph (SEM).Platelets in blood are small oval disks are termed nonactivated platelets or thrombocytes.Platelets serve as body's first line of defence to prevent excessive blood loss.When
RF2AF8XWY–Enterococcus sp. bacteria, SEM
RFPR1T4T–Activated platelets, coloured scanning electron micrograph (SEM). Platelets are blood cell fragments that play an essential role in blood clotting and wound repair, and can also activate certain immune responses. They are formed in the red bone marrow, lungs, and spleen by fragmentation of very large cells known as megakaryocytes. Platelets in the blood are small oval disks and are termed non-activated platelets or thrombocytes. They are the body's first line of defence against excessive blood loss. Magnification: x2,000 at 10 cm wide.
RFHJ0C21–Coloured scanning electron micrograph (SEM) of an uncut sapphire. Sapphire is a typically blue gemstone variety of the mineral corundum (aluminium oxide). Sapphire is very dense and very hard. Non-gem quality sapphire is often used as an industrial abrasive, or as scratch-resistant glass. Magnification: x130 when shortest axis printed at 25 millimetres.
RFHJ0C30–Ragweed pollen,Ambrosia psilostachya,coloured scanning electron micrograph (SEM).This pollen is allergen.Ragweed is main cause of weed allergies.Ragweed pollen is notorious for causing allergic reactions in humans,specifically allergic rhinitis.Up to half of all cases of pollen-related allergic
RFHJ0BT4–Coloured scanning electron micrograph (SEM) of Surface recording grooves of 78 rpm phonograph record.Early disc phonograph records (also called gramophone records) were made of various materials including hard rubber.From 1897 onwards,earlier materials were largely replaced by rather brittle
RFHJ0BF5–Weeping willow pollen (Salix babylonica), coloured scanning electron micrograph (SEM). The willow (and poplar) family, Saliaceae, is characterized by having their flowers in catkins, the staminate (male) blossoms are on distinct trees from the pistillate (female) trees. Insect pollination occurs during the months of May through August. The weeping willow belongs to the group known as crack willows, from the brittleness of their twigs at the joints. Magnification: x260 when shortest axis printed at 25 millimetres.
RFHJ0C31–Ragweed pollen,Ambrosia psilostachya,coloured scanning electron micrograph (SEM).This pollen is allergen.Ragweed is main cause of weed allergies.Ragweed pollen is notorious for causing allergic reactions in humans,specifically allergic rhinitis.Up to half of all cases of pollen-related allergic
RFHJ0BH6–Foxglove seed surface (Digitalis purpurea),coloured scanning electron micrograph (SEM).This image shows seed coat (or testa) of foxglove seed (Digitalis purpurea).The testa has irregular honeycomb-like structure.The purpose of seed coat structure is to enhance seed germination.The seed coat traps
RFHJ0BM1–Coloured scanning electron micrograph (SEM) of Plastic wrap,Glad Press'n Seal.Plastic wrap is thin plastic film (less than 0.01mm in thickness) that typically is used for sealing food items in containers to keep them fresh.Glad Press'n Seal wrap is special type of plastic wrap that has its surface
RFHJ0C33–Ragweed pollen,Ambrosia psilostachya,coloured scanning electron micrograph (SEM).This pollen is allergen.Ragweed is main cause of weed allergies.Ragweed pollen is notorious for causing allergic reactions in humans,specifically allergic rhinitis.Up to half of all cases of pollen-related allergic
RFHJ0BHP–Coloured scanning electron micrograph (SEM) Emu eggshell surface tiny pores (Dromaius novaehollandiae).Calcium carbonate crystals make up Emu eggshell.Bird eggshells are semipermeable membranes composed of mineralized calcium carbonate filled thousands of pores.The eggshell protects embryo inside
RFHJ0BRR–Coloured scanning electron micrograph (SEM) of Coral sand (Kailua, Hawaii). Beach sand contains both rock minerals and skeletons that have been derived from living organisms (such as coral). Sand grains produced from coral have fine holes and are smoother due to wearing down by the surface action. Magnification: x43 when shortest axis printed at 25 millimetres.
RFHJ0BG4–Papillae on upper surface of rose flower petal (Rosa sp),coloured scanning electron micrograph (SEM).Papillae are projections from epidermal cells in rose they are conical in shape.The papillae surface is often covered in thin layer of wax to reduce water evaporation in flower.Rose flower petals
RFHJ0BJ8–Coloured scanning electron micrograph (SEM) Chicken eggshell surface (Gallus gallus domesticus).Shown here are surface mineral crystals that form many tiny pores in bird eggshell.Eggshells are outer covering of hard-shelled eggs of other eggs soft outer coats.Eggshell structure varies widely among
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