STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Ciliate protozoan. Coloured scanning electron micrograph (SEM) of a single-celled organism covered in cilia (hair-like projections), which it uses to help it move around its environment. Magnification: x1200, when printed 10 centimetres wide.
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