28726D

28726D
Caption: Common indoor / allergenic mold (Aureobasidium pullulans). Seen here is fungal hyphae stage producing yeast buds. This species also grows as a yeast form under certain environmental conditions. Aureobasidium pullulans is also known as Pullularia pullalans. Aureobasidium is a common indoor mold / mildew that grows in damp places. It occurs indoors in very damp areas and in free standing water, such as condensate pans, or following a flood. Spores only become airborne through mechanical disruption of contaminated materials or aspiration of contaminated water. It is not a primary human pathogen nor is it recognized as a producer of significant mycotoxins. High airborne levels of this fungus have been associated with allergic complaints probably due to respiratory irritation mediated by cell-wall components (e.g. beta glucans, glycoproteins), it has also been known as an irritant, and to cause pulmonary problems such as allergenic asthma, sinusitus, ephysema and pulmonary infections.
Magnification*: x800
Type: SEM
Copyright 2008 Dennis Kunkel Microscopy, Inc.
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