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Diatom. Coloured scanning electron micrograph (SEM) of an Arachnoidiscus japonicus diatom. Diatoms are single-celled photosynthetic algae, of which there are about 100,000 species. They have mineralised cell walls (frustules) that contain silica and provide protection and support. The diatoms form an important part of the plankton at the base of the marine and freshwater food chains.
May 2nd, 2013
Viewed 49 Times - Last Visitor from Hanoi, 44 - Vietnam on 08/17/2014 at 11:34 AM
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