DR TONY BRAIN / SCIENCE PHOTO LIBRARY DR TONY BRAIN / SCIENCE PHOTO LIBRARY
Scanning Electron Micrograph (SEM) of bacteria on the point of a household pin. This image is fourth in a series of five SEMs which shows the pin and bacteria at successively increasing magnifications. Magnification: x875 at 35mm size, x6250 at 8x10-inch size.
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