GERD GUENTHER / SCIENCE PHOTO LIBRARY GERD GUENTHER / SCIENCE PHOTO LIBRARY
Bursaria protozoan. Differential interference contrast micrograph of the large freshwater ciliate protozoan Bursaria truncatella. These protozoa are known as ciliates because they propel themselves through the water by beating tiny hair-like structures known as cilia. B. truncatella can reach up to 1 millimetre in length. Magnification: x60 when printed 10 centimetres wide.
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