CNRI / SCIENCE PHOTO LIBRARY CNRI / SCIENCE PHOTO LIBRARY
False-colour transmission electron micrograph (TEM) of Staphylococcus aureus, showing a bacterium in the process of division by binary fission. The two daughter cells produced by the division are about to separate, along the length of the red line in the centre of the image. S. aureus is a spherical, non-motile, Gram-positive bacterium causing pus-forming infections such as boils and abscesses. It also secretes an exotoxin that causes a type of gastro-enteritis. Magnification: x34,000 at 35mm size, x68,000 at 6x7cm size.
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