GERD GUENTHER / SCIENCE PHOTO LIBRARY GERD GUENTHER / SCIENCE PHOTO LIBRARY
Light micrograph of Calothrix sp., a marine cyanobacterium forming filamentous colonies, showing single filaments and false branches. Each filament is covered by a firm sheath. Culture material of the Culture Collection of Algae at the University of Cologne. Microscopic contrast method: Differential interference contrast. Magnification 580x when printed at 10 centimetres width.
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