DENNIS KUNKEL MICROSCOPY / SCIENCE PHOTO LIBRARY DENNIS KUNKEL MICROSCOPY / SCIENCE PHOTO LIBRARY
Coloured scanning electron micrograph (SEM) of Fusobacterium nucleatum, Gram-negative, anaerobic, non-motile rod prokaryote (characterized by a long, slender shape and pointed ends). Human microbiota (of the mouth and upper respiratory tract), susceptible to penicillin. Occasional cause of abscesses and blood infections. Possible role in periodontal disease and respiratory infections. Magnification: x3,250 when shortest axis printed at 25 millimetres.
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