GERD GUENTHER / SCIENCE PHOTO LIBRARY GERD GUENTHER / SCIENCE PHOTO LIBRARY
Light micrograph of a Volvox aureus green alga spherical colony, stained with DAPI to show the nuclei of the colony cells in blue-white fluorescence. The chlorophyll of the cells of the colony show red auto fluorescence. Microscopic contrast method: Fluorescence contrast, UV excitation. Magnification 400x when printed at 10 centimetres wide.
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