MAREK MIS / SCIENCE PHOTO LIBRARY MAREK MIS / SCIENCE PHOTO LIBRARY
Euglena protozoa. Darkfield illuminated polarised light micrograph of Euglena sp. flagellate protozoa (round). Euglena sp. is a freshwater unicellular (single-celled) organism that obtains energy either from sunlight by photosynthesis, or by absorbing chemicals from its surroundings. Magnification: x400 when printed 10 centimetres wide.
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