Vorticella protozoa, light micrograph

Vorticella protozoa, light micrograph

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Credit: EYE OF SCIENCE/SCIENCE PHOTO LIBRARY

Caption: Vorticella protozoa (Vorticella sp.), interference contrast light micrograph. These are ciliate protozoa, so-called because the bell-shaped heads have tiny, hair-like structures (cilia) which are moved in a waving motion to waft food towards them from the surrounding fluid. The cilia can also be used for movement. Each head is attached to a stalk which the vorticella uses to secure itself to an anchor-point. The vorticellae seen here are in an extended position for feeding. When the creature is disturbed it can contract the stalk for protection. Magnification: x160 when printed 10cm high.

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Keywords: biological, biology, ciliate, ciliated, interference contrast, invertebrate, invertebrates, light micrograph, light microscope, microbiological, microbiology, protozoa, protozoan, protozoans, single-celled, unicellular, vorticella

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