GERD GUENTHER / SCIENCE PHOTO LIBRARY GERD GUENTHER / SCIENCE PHOTO LIBRARY
Paramecium bursaria 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 bean-shaped macronucleus fluoresce in light blue color. Microscopic contrast technique : Incident fluorescence with ultraviolet excitation. Magnification: 360x when printed 10 centimetres wide.
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