Desmids have the ability to move slowly excreting mucilage out of special . The picture shows some of this of Euastrum oblongum. High resolution DOF picture assembled of over 40 shots (manually stacked) taken with Planapo 63/1.4 showing the multilevel cell surface.
Sample from sphagnum pond situated in the northern alpine region of Austria near Salzburg.
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Wolfgang Bettighofer, www.protisten.de.