A scanning electron micrograph (SEM) of Stachybotrys chartarum

A scanning electron micrograph (SEM) of Stachybotrys chartarum Stock Photo

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Mediscan / Alamy Stock Photo

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34 MB (826.8 KB Compressed download)


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3985 x 2984 px | 33.7 x 25.3 cm | 13.3 x 9.9 inches | 300dpi



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Stachybotrys chartarum is a greenish black cellulotytic fungus that grows in wet low nitrogen environments with a high cellulose content such as hay straw wicker and wood chips as well as building materials such as ceiling tile drywall paper vapor barriers wallpaper insulation backing cardboard boxes paper files fiberboard the paper covering of gypsum wallboard particleboard jute dust and wood i e in houses damaged by water The fungus produces mycotoxins such as macrocylic trichothecenes and trichoverroids in its spores It was recognized as the cause of outbreaks of a new disease in horses and other animals in eastern Europe in the 1930s which were characterized by irritation of the mouth throat and nose shock dermal necrosis a decrease in leukocytes hemorrhage and nervous disorder followed by death Horses are especially susceptible to these toxins which they may ingest with infested hay 1 mg of pure toxin can kill a horse Stachybotrys was implicated in fatal pulmonary hemorrhage hemosiderosis in infants Image width 98 5 micrometers

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