GERD GUENTHER / SCIENCE PHOTO LIBRARY GERD GUENTHER / SCIENCE PHOTO LIBRARY
Peritrich protozoa. Differential interference contrast micrograph of a colony of sessile (non-mobile) ciliate peritrich protozoa (bell-shaped). These protozoa are known as ciliates because they propel themselves through the water by beating tiny hair-like structures known as cilia. Magnification: x230 when printed 10 centimetres wide.
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