BSIP VEM / SCIENCE PHOTO LIBRARY BSIP VEM / SCIENCE PHOTO LIBRARY
Aspergillus niger. Coloured scanning electron micrograph (SEM) of a fruiting body of the fungus Aspergillus niger, on the tip of a conidiophore. The small green spheres are spores, about to be released into the air. In the background are a network of vegetative filaments called hyphae. A. niger grows in household dust, soil, and decaying vegetable matter, including stale food. Aspergillus sp. can infect the human outer ear, where it causes otitis externa (otomycosis), infection and inflammation of the ear canal. Certain species cause aspergillosis, an opportunistic infection of the respiratory system. Magnification: x200 at 35mm size.
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