GERD GUENTHER / SCIENCE PHOTO LIBRARY GERD GUENTHER / SCIENCE PHOTO LIBRARY
Light micrograph of a Planotaenium interruptum, a freshwater desmid, stained with DAPI under UV excitation, showing the nucleus blue fluorescing due the DAPI uptake and the lobate chloroplast showing red auto fluorescence. Culture material of the Culture Collection of Algae at the University of Cologne. Microscopic contrast method: Fluorescence contrast, UV excitation. Magnification 360x when printed at 10 centimetres wide.
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