![](http://www.alamy.com/thumbs/6/8D62B34E-434C-4ACC-BC68-6C3C49813790/2AD446W.jpg)
Light micrograph of Calothrix sp., a marine cyanobacterium forming filamentous colonies. The image shows a false branch of two filaments growing in on
Light micrograph of Calothrix sp., a marine cyanobacterium forming filamentous colonies. The image shows a false branch of two filaments growing in one 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.
Size: 5616px × 3744px
Photo credit: © GERD GUENTHER/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No
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