DR TONY BRAIN / SCIENCE PHOTO LIBRARY DR TONY BRAIN / SCIENCE PHOTO LIBRARY
Coloured scanning electron micrograph of rod- shaped bacteria (orange) clustered on the point of a syringe needle used to administer injections. At this magnification the tip of the needle is seen to be bent with a clump of bacteria growing in the curve. This is the fourth in a series of pictures at regularly increasing magnifications. Magnification: x560 at 35mm size.
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