STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Clostridium villosum. Coloured scanning electron micrograph (SEM) of Clostridium villosum isolated from a cat's tongue. Clostridium villosum is an obligately anaerobic, rod-shaped, spore forming, nonmotile organism which is gram positive in its early stages of growth and gram negative after 18 to 24 hours. The commonest anaerobic bacterium in feline oral flora, it is often associated with abscess formation from cat bites. Magnification: x4000 when printed 10 centimetres wide.
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