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Diatom Alga, Sem
Photograph - Photograph
Diatom. Coloured scanning electron micrograph (SEM) of a Rhaphoneis amphiceros var. tetragonis diatom. This is a marine planktonic unicellular alga that inhabits coastal waters. It has a mineralised cell wall (frustule) divided into two halves. The frustule contains silica and provides protection and support. Magnification x47.5 at 6x7cm size.
May 2nd, 2013
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