Rhizosolenia setigera shortly after binary fission, accompanied by Thalassiosira nordenskjoeldii and Coscinodiscus wailesii. Scale bar indicates 100 m. The image was built up using several photomicrographic frames with manual stacking technique. Sample from North Sea near Heligoland (spring diatom bloom). Images were taken using Zeiss Universal with Olympus C7070 CCD camera.For more look at
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