STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
E. coli bacteria. Coloured scanning electron micrograph (SEM) of Escherichia coli bacteria (red) attached to the remains of a dead cell. E. coli bacteria release toxins that disrupt cell membranes, resulting in death of the cell. Magnification: x4000, when printed 10cm wide.
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