MAREK MIS / SCIENCE PHOTO LIBRARY MAREK MIS / SCIENCE PHOTO LIBRARY
Polarised light micrograph of a Paramecium bursaria (left) and a Monommata sp. rotifer. Paramecium bursaria are ciliate protozoans that share a symbiotic relationship with the small green algae Zoochlorella. Rotifers are common in freshwater environments. They use their cilia (microscopic hairs) and two toe-like projections for locomotion. Magnification: x330 when printed 10 centimetres wide.
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