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Microscopic view of a diatom (Navicula). Brightfield illumination. Stock Photo

RF2H3W596–Microscopic view of a diatom (Navicula). Brightfield illumination.

Microscopic view of a diatom. Brightfield illumination. Stock Photo

RF2H3W5E6–Microscopic view of a diatom. Brightfield illumination.

Microscopic view of colonial green algae Coelastrum between single-cell algae. Brightfield illumination. Stock Photo

RF2H3W5M7–Microscopic view of colonial green algae Coelastrum between single-cell algae. Brightfield illumination.

Microscopic view of detritus and different algae. Brightfield illumination. Stock Photo

RF2H3W5M6–Microscopic view of detritus and different algae. Brightfield illumination.

Microscopic view of euglenoid (Lepocinclis). Brightfield illumination. Stock Photo

RF2H3W5E0–Microscopic view of euglenoid (Lepocinclis). Brightfield illumination.

Microscopic view of a cyanobacteria (blue-green algae, Oscillatoria) filaments. Polarized light with crossed polarizers. Stock Photo

RF2H3W5T9–Microscopic view of a cyanobacteria (blue-green algae, Oscillatoria) filaments. Polarized light with crossed polarizers.

RF2H3W5NF–Microscopic view of euglenoid (Lepocinclis). Brightfield illumination.

Microscopic view of green algae filament between detritus. Brightfield illumination. Stock Photo

RF2H3W5NC–Microscopic view of green algae filament between detritus. Brightfield illumination.

Microscopic view of Border forsythia (Forsythia x intermedia) stem cross-section. Polarized light with crossed polarizers. Stock Photo

RF2H3W69G–Microscopic view of Border forsythia (Forsythia x intermedia) stem cross-section. Polarized light with crossed polarizers.

RF2H3W59H–Microscopic view of a diatom. Brightfield illumination.

Microscopic view of a diatom (Gyrosigma). Brightfield illumination. Stock Photo

RF2H3W5DW–Microscopic view of a diatom (Gyrosigma). Brightfield illumination.

Microscopic view of different types of algae. Brightfield illumination. Stock Photo

RF2H3W5RJ–Microscopic view of different types of algae. Brightfield illumination.

Microscopic view of two green algae (Cosmarium). Brightfield illumination. Stock Photo

RF2H3W5TB–Microscopic view of two green algae (Cosmarium). Brightfield illumination.

Microscopic view of two cone-shaped diatoms (Gomphonema) with stalk on freshwater algae filament. Brightfield illumination. Stock Photo

RF2H3W59E–Microscopic view of two cone-shaped diatoms (Gomphonema) with stalk on freshwater algae filament. Brightfield illumination.

Microscopic view of a tick (Ixodidae, hard tick) head and mouth. Brightfield illumination. Stock Photo

RF2H3W59N–Microscopic view of a tick (Ixodidae, hard tick) head and mouth. Brightfield illumination.

Microscopic view of Common hazel (Corylus avellana) lenticel (top view). Transmitted light. Brightfield illumination. Stock Photo

RF2H3W600–Microscopic view of Common hazel (Corylus avellana) lenticel (top view). Transmitted light. Brightfield illumination.

Microscopic view of a diatoms (Diatoma) between algae cells. Brightfield illumination. Stock Photo

RF2H3W5FM–Microscopic view of a diatoms (Diatoma) between algae cells. Brightfield illumination.

Microscopic view of Crystalwort (Riccia fluitans) thalli. Darkfield illumination. Stock Photo

RF2H3W5RD–Microscopic view of Crystalwort (Riccia fluitans) thalli. Darkfield illumination.

Microscopic view of White dead-nettle (Lamium album) stem cross section. Brightfield illumination. Stock Photo

RF2H3W601–Microscopic view of White dead-nettle (Lamium album) stem cross section. Brightfield illumination.

Microscopic view of Scots pine (Pinus sylvestris) bark section. Polarized light with crossed polarizers. Stock Photo

RF2H3W64R–Microscopic view of Scots pine (Pinus sylvestris) bark section. Polarized light with crossed polarizers.

Microscopic view of green algae (Cosmarium) cell. Brightfield illumination. Stock Photo

RF2H3W5YD–Microscopic view of green algae (Cosmarium) cell. Brightfield illumination.

Microscopic view of a tick (Ixodidae, hard tick) mouth. Polarized light with crossed polarizers. Stock Photo

RF2H3W59W–Microscopic view of a tick (Ixodidae, hard tick) mouth. Polarized light with crossed polarizers.

Microscopic view of Scots pine (Pinus sylvestris) bark section. Brightfield illumination. Stock Photo

RF2H3W652–Microscopic view of Scots pine (Pinus sylvestris) bark section. Brightfield illumination.

RF2H3W607–Microscopic view of Common hazel (Corylus avellana) lenticel (top view). Transmitted light. Brightfield illumination.

Microscopic view of a Spurge (Euphorbia sp.) pollen grains. Darkfield illumination. Stock Photo

RF2H3W5MB–Microscopic view of a Spurge (Euphorbia sp.) pollen grains. Darkfield illumination.

RF2H3W605–Microscopic view of Scots pine (Pinus sylvestris) bark section. Brightfield illumination.

Microscopic view of a diatom colony. Brightfield illumination. Stock Photo

RF2H3W5E2–Microscopic view of a diatom colony. Brightfield illumination.

RF2H3W65J–Microscopic view of Scots pine (Pinus sylvestris) bark section. Brightfield illumination.

Microscopic view of a diatoms (Diatoma) and green algae filaments. Brightfield illumination. Stock Photo

RF2H3W5E1–Microscopic view of a diatoms (Diatoma) and green algae filaments. Brightfield illumination.

Microscopic view of green algae (Cosmarium) inside empty Ostracod shell. Brightfield illumination. Stock Photo

RF2H3W5T3–Microscopic view of green algae (Cosmarium) inside empty Ostracod shell. Brightfield illumination.

Microscopic view of colonial green algae Scenedesmus. Brightfield illumination. Stock Photo

RF2H3W5N1–Microscopic view of colonial green algae Scenedesmus. Brightfield illumination.

Microscopic view of a diatom and detritus. Brightfield illumination. Stock Photo

RF2H3W5E3–Microscopic view of a diatom and detritus. Brightfield illumination.

Microscopic view of detritus with algae (Cosmarium) and bacteria. Brightfield illumination. Stock Photo

RF2H3W5RP–Microscopic view of detritus with algae (Cosmarium) and bacteria. Brightfield illumination.

Microscopic view of a Common chicory (Cichorium intybus) curled flower stigma and pollen grains. Brightfield illumination. Stock Photo

RF2CAGMFT–Microscopic view of a Common chicory (Cichorium intybus) curled flower stigma and pollen grains. Brightfield illumination.

Microscopic view of a Meadow goat's-beard (Tragopogon pratensis) flower stigma detail and pollen grains. Darkfield illumination. Stock Photo

RF2CAGMG6–Microscopic view of a Meadow goat's-beard (Tragopogon pratensis) flower stigma detail and pollen grains. Darkfield illumination.

Microscopic view of a Common chicory (Cichorium intybus) flower stigma detail and pollen grains. Brightfield illumination. Stock Photo

RF2CAGMGC–Microscopic view of a Common chicory (Cichorium intybus) flower stigma detail and pollen grains. Brightfield illumination.

Microscopic view of sodium chloride crystals. Darkfield illumination. Stock Photo

RF2CAGMH3–Microscopic view of sodium chloride crystals. Darkfield illumination.

Microscopic view of a water flea (Alona quadrangularis). Brightfield illumination with contrast modulation. Stock Photo

RF2CAGMH6–Microscopic view of a water flea (Alona quadrangularis). Brightfield illumination with contrast modulation.

Microscopic view of a Horsetail (Equisetum arvense) spores with elaters. Polarized light with crossed polarizers. Stock Photo

RF2CAGMH7–Microscopic view of a Horsetail (Equisetum arvense) spores with elaters. Polarized light with crossed polarizers.

Microscopic view of planktonic wheel animal (rotifer). Brightfield illumination. Stock Photo

RF2CAGMJN–Microscopic view of planktonic wheel animal (rotifer). Brightfield illumination.

RF2CAGMH5–Microscopic view of a Horsetail (Equisetum arvense) spores with elaters. Polarized light with crossed polarizers.

Microscopic view of a Meadow goat's-beard (Tragopogon pratensis) curled flower stigma detail. Darkfield illumination. Stock Photo

RF2CAGMG0–Microscopic view of a Meadow goat's-beard (Tragopogon pratensis) curled flower stigma detail. Darkfield illumination.

Microscopic view of a water flea (Alona quadrangularis) with visible eggs. Brightfield illumination. Stock Photo

RF2CAGMH0–Microscopic view of a water flea (Alona quadrangularis) with visible eggs. Brightfield illumination.

RF2CAGMH8–Microscopic view of sodium chloride crystals. Darkfield illumination.

Microscopic view of a Common chicory (Cichorium intybus) flower stigma detail. Brightfield illumination. Stock Photo

RF2CAGMFX–Microscopic view of a Common chicory (Cichorium intybus) flower stigma detail. Brightfield illumination.

Microscopic view of Scots pine (Pinus sylvestris) pollen grains. Darkfield illumination. Stock Photo

RF2CAGMH1–Microscopic view of Scots pine (Pinus sylvestris) pollen grains. Darkfield illumination.

Microscopic view of a water flea parthenogenetic eggs inside shell (carapace). Brightfield illumination with contrast modulation. Stock Photo

RF2CAGMJP–Microscopic view of a water flea parthenogenetic eggs inside shell (carapace). Brightfield illumination with contrast modulation.

Microscopic view of testate amoeba (Arcella) shell. Brightfield illumination. Stock Photo

RF2C8BGGF–Microscopic view of testate amoeba (Arcella) shell. Brightfield illumination.

Microscopic view of a Daphne mezereum plant detail. Polarized light, crossed polarizers. Stock Photo

RF2C8BGH9–Microscopic view of a Daphne mezereum plant detail. Polarized light, crossed polarizers.

Microscopic view of testate amoeba (Arcella) shell with visible some of internal structure. Brightfield illumination. Stock Photo

RF2C8BGGT–Microscopic view of testate amoeba (Arcella) shell with visible some of internal structure. Brightfield illumination.

Microscopic view of testate amoeba (Arcella) shell with visible external chitinous shell pattern. Brightfield illumination. Stock Photo

RF2C8BGH3–Microscopic view of testate amoeba (Arcella) shell with visible external chitinous shell pattern. Brightfield illumination.

Microscopic view of testate amoeba (Centropyxis aculeata) shell. Brightfield illumination. Stock Photo

RF2C8BGH2–Microscopic view of testate amoeba (Centropyxis aculeata) shell. Brightfield illumination.

Microscopic view of a Lamium album stem cross-section detail. Gentian violet stain. Brightfield illumination. Stock Photo

RF2C8BGH4–Microscopic view of a Lamium album stem cross-section detail. Gentian violet stain. Brightfield illumination.

Microscopic view of moss leaf (Plagiomnium affine). Brightfield illumination. Stock Photo

RF2C85ED4–Microscopic view of moss leaf (Plagiomnium affine). Brightfield illumination.

Microscopic view of a cotton fibers. Polarized light, crossed polarizers. Stock Photo

RF2C85EEP–Microscopic view of a cotton fibers. Polarized light, crossed polarizers.

Microscopic view of a potato starch in potato tuber cells. Iodine stain. Darkfield illumination. Stock Photo

RF2C85ED9–Microscopic view of a potato starch in potato tuber cells. Iodine stain. Darkfield illumination.

Microscopic view of a potato starch in potato tuber cells. Iodine stain. Brightfield illumination. Stock Photo

RF2C85ED7–Microscopic view of a potato starch in potato tuber cells. Iodine stain. Brightfield illumination.

Microscopic view of moss. Brightfield illumination. Stock Photo

RF2C85ECY–Microscopic view of moss. Brightfield illumination.

RF2C85EER–Microscopic view of a cotton fibers. Polarized light, crossed polarizers.

Microscopic view of a cotton fibers. Polarized light, partially crossed polarizers. Stock Photo

RF2C85EET–Microscopic view of a cotton fibers. Polarized light, partially crossed polarizers.

Microscopic view of moss leaf (Plagiomnium affine). Darkfield illumination. Stock Photo

RF2C85EBP–Microscopic view of moss leaf (Plagiomnium affine). Darkfield illumination.

RF2C85EBN–Microscopic view of moss leaf (Plagiomnium affine). Darkfield illumination.

RF2C85ED3–Microscopic view of moss leaf (Plagiomnium affine). Darkfield illumination.

Canal between ancient buildings. Venice, Italy. Pencil and watercolor on paper. Stock Photo

RFTBACAK–Canal between ancient buildings. Venice, Italy. Pencil and watercolor on paper.

Drawing of a fighter Vought F4U-1A Corsair (Royal Navy markings, 1944) in fly. Pencil and watercolor on paper. Stock Photo

RFTBABTM–Drawing of a fighter Vought F4U-1A Corsair (Royal Navy markings, 1944) in fly. Pencil and watercolor on paper.

The Grand Canal. Venice, Italy. Pencil and watercolor on paper. Stock Photo

RFTBACAC–The Grand Canal. Venice, Italy. Pencil and watercolor on paper.

Garden with picturesque ruin. Loose sketch. Ink and watercolor on cardboard. Stock Photo

RFTBACBW–Garden with picturesque ruin. Loose sketch. Ink and watercolor on cardboard.

Sea coastline with rocks. Watercolor on paper. Stock Photo

RFTBAC23–Sea coastline with rocks. Watercolor on paper.

Grunge abstract woman portrait over flowery background. Watercolor on coarse paper. Stock Photo

RFTBABT3–Grunge abstract woman portrait over flowery background. Watercolor on coarse paper.

Rock formation at the Canadian Bay of Fundy. Loose sketch. Ink and watercolor on cardboard. Stock Photo

RFTBACD0–Rock formation at the Canadian Bay of Fundy. Loose sketch. Ink and watercolor on cardboard.

The Totem Pole. Monument Valley, Arizona-Utah border, USA. Watercolor on paper. Stock Photo

RFTBAC7W–The Totem Pole. Monument Valley, Arizona-Utah border, USA. Watercolor on paper.

Pair of a first-generation Soviet jet fighters Yakovlev Yak-15 in fly. Loose sketch. Watercolor on paper. Stock Photo

RFTBABTB–Pair of a first-generation Soviet jet fighters Yakovlev Yak-15 in fly. Loose sketch. Watercolor on paper.

Abandoned house somewhere in USA. Loose sketch. Ink and watercolor on cardboard. Stock Photo

RFTBACCE–Abandoned house somewhere in USA. Loose sketch. Ink and watercolor on cardboard.

Starry night galaxy. Watercolor on cardboard. Stock Photo

RFTBACDF–Starry night galaxy. Watercolor on cardboard.

Seascape with sailboat. Watercolor (miniature) on cardboard. Stock Photo

RFTBABW7–Seascape with sailboat. Watercolor (miniature) on cardboard.

St James's Palace. London, UK. Pencil and watercolor on paper. Stock Photo

RFTBACA1–St James's Palace. London, UK. Pencil and watercolor on paper.

Sea coastline with rocks on the beach. Watercolor (miniature) on coarse paper. Stock Photo

RFTBABY5–Sea coastline with rocks on the beach. Watercolor (miniature) on coarse paper.

Thai village. Loose sketch. Ink and watercolor on cardboard. Stock Photo

RFTBACCN–Thai village. Loose sketch. Ink and watercolor on cardboard.

Ancient street. Pencil and watercolor on paper. Stock Photo

RFTBACA7–Ancient street. Pencil and watercolor on paper.

Landscape with tree and rural road. Loose sketch. Ink and watercolor on cardboard. Stock Photo

RFTBACB6–Landscape with tree and rural road. Loose sketch. Ink and watercolor on cardboard.

Small fishing trawler. Ink and watercolor on cardboard. Stock Photo

RFTBACD7–Small fishing trawler. Ink and watercolor on cardboard.

Stourhead Garden. The Palladian Bridge and Pantheon. Stourhead, UK. Pencil and watercolor on paper. Stock Photo

RFTBAC9X–Stourhead Garden. The Palladian Bridge and Pantheon. Stourhead, UK. Pencil and watercolor on paper.

The race of sailboats. Watercolor (miniature) on cardboard. Stock Photo

RFTBABWE–The race of sailboats. Watercolor (miniature) on cardboard.

Loose drawing of a Czechoslovakian fighter Avia B.35 (second prototype) in fly. Watercolor on paper. Stock Photo

RFTBABTE–Loose drawing of a Czechoslovakian fighter Avia B.35 (second prototype) in fly. Watercolor on paper.

Drawing of a first all-metal passenger aircraft Junkers F-13 in fly. Pencil and watercolor on paper. Stock Photo

RFTBABW3–Drawing of a first all-metal passenger aircraft Junkers F-13 in fly. Pencil and watercolor on paper.

Two trees. Ink and watercolor on cardboard. Stock Photo

RFTBACAX–Two trees. Ink and watercolor on cardboard.

Landscape with tree. Loose sketch. Ink and watercolor on paper. Stock Photo

RFTBACBH–Landscape with tree. Loose sketch. Ink and watercolor on paper.

Small fishing boats and birds under warm sky. Watercolor (miniature) on cardboard. Stock Photo

RFTBABWX–Small fishing boats and birds under warm sky. Watercolor (miniature) on cardboard.

Abstract landscape with trees. Pencil and watercolor (miniature) on coarse paper. Stock Photo

RFTBAC0C–Abstract landscape with trees. Pencil and watercolor (miniature) on coarse paper.

Stony river flow between trees. Watercolor on paper. Stock Photo

RFTBAC4B–Stony river flow between trees. Watercolor on paper.

Bryce Canyon National Park, Utah, USA. Thor's Hammer. Watercolor on paper. Stock Photo

RFTBAC6F–Bryce Canyon National Park, Utah, USA. Thor's Hammer. Watercolor on paper.

Fantasy rocks formations. Yorkshire, UK. Pencil and watercolor on paper. Stock Photo

RFTBAC9J–Fantasy rocks formations. Yorkshire, UK. Pencil and watercolor on paper.

Umbel of a unspecified plant from Apiaceae (Umbelliferae) family in a rainy weather. Watercolor and gouache on paper. Stock Photo

RFT8YPAA–Umbel of a unspecified plant from Apiaceae (Umbelliferae) family in a rainy weather. Watercolor and gouache on paper.

Two pumpkins (Cucurbita pepo) drawing over white background. Watercolor on paper. Stock Photo

RFT8YP92–Two pumpkins (Cucurbita pepo) drawing over white background. Watercolor on paper.

Drawing of a extinct tree-like plants Lepidodendron. Graphite pencil on paper. Stock Photo

RFT8YPAY–Drawing of a extinct tree-like plants Lepidodendron. Graphite pencil on paper.

The onion (Allium cepa) small bulbs botanical drawing over white background. Watercolor on paper. Stock Photo

RFT8YP9P–The onion (Allium cepa) small bulbs botanical drawing over white background. Watercolor on paper.

Sweet chestnut (Castanea sativa) opened mature fruit with seed over dried fallen leaf botanical drawing on white background. Pencil and watercolor on Stock Photo

RFT8YP5D–Sweet chestnut (Castanea sativa) opened mature fruit with seed over dried fallen leaf botanical drawing on white background. Pencil and watercolor on

Two red apple fruits (Malus domestica) over white background. Watercolor on paper. Stock Photo

RFT8YP9F–Two red apple fruits (Malus domestica) over white background. Watercolor on paper.

Lesser periwinkle (Vinca minor, cultivar Aureovariegata). Watercolor on paper. Stock Photo

RFT8YPA8–Lesser periwinkle (Vinca minor, cultivar Aureovariegata). Watercolor on paper.

Drawing of a extinct Carboniferous tree-like plants Sigillaria. Graphite pencil on paper. Stock Photo

RFT8YPAW–Drawing of a extinct Carboniferous tree-like plants Sigillaria. Graphite pencil on paper.

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