DR.TONY BRAIN & DAVID PARKER / SCIENCE PHOTO LIBRARY. DR.TONY BRAIN & DAVID PARKER / SCIENCE PHOTO LIBRARY.
Coloured scanning electron micrograph (SEM) of bacteria (yellow) on the head of a household pin. At this magnification, individual rod-shaped bacteria (bacilli) are seen attached to the pin's rough surface. Fifth in a series of 5 pictures at regularly increasing magnification. Magnification: x4,375 at 35mm size.
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