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 with 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 stream. Possible role in periodontal disease. Magnification: x3,250 when shortest axis printed at 25 millimetres.
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