Euplotes sp. ciliate, stained with DAPI to show the blue nucleus inside under fluorescence lighting. The chlorophyll in the symbiotic algae genus Chlorella fluoresce red, while the horseshoe-shaped macronucleus and the small round micronucleus fluoresce in light blue color. Microscopic contrast technique : Incident fluorescence with ultraviolet excitation. Magnification: 360x when printed 10 centimetres wide.
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