Cocconeis spec. on a thallus of the red alga Ceramium. The two cell types of the thallus are shown: one huge light axial cell with tubular rhodoplasts with the two terminal cortex structures built up by numerous little reddish rotund cells with their lenticular rhodoplasts. Collected from Bodden, the brackish waters lying between the isles of Hiddensee and Ruegen (German Baltic Sea). This image was taken using Zeiss Universal with Olympus C7070 CCD camera.
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Wolfgang Bettighofer, www.protisten.de.
