A closer look on the idiosomes ( rods and plates) of the Lesquereusia modesta test. On the there is a sieve-like region. This represents the proteinaceous matrix of the test, in which idiosomes an xenosomes (quartz grains) are embedded. indicates 25 µm.
Sample from a freshwater pond on the island of Hiddensee (Baltic Sea, Germany). This image was taken using Zeiss Universal with Olympus C7070 CCD camera.
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Wolfgang Bettighofer, www.protisten.de.