London, United Kingdom
Diatom Cell Wall, Sem
Photograph - Photograph
Diatom cell wall. Coloured scanning electron micrograph (SEM) of the pattern of small holes, called striae, in the cell wall of a diatom alga. A diatom is a planktonic unicellular alga that has silica in its cell wall (frustule). Diatoms are photosynthetic, and they are found in both marine and freshwater environments.
May 6th, 2013
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