Visual Aids:


Pleomorphic cells of Nitrotoga sp. originating from activated sludge (Dradenau, Hamburg). The culture was incubated at 17°C with 0.3 mM of sodium nitrite. Please notice the extended periplamic space stuffed with particulate electron dense material. From the laboratory of Eva Spieck, Universität Hamburg. For classroom use.
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Short rods of Nitrobacter sp. derived from the wastewater treatment plant Dradenau in Hamburg and grown at 28°C with 30 mM of sodium nitrite. Intracytoplasmic membranes and carboxysomes are clearly visible. From the laboratory of Eva Spieck, Universität Hamburg. For classroom use.
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Microcolony of Nitrospira defluvii, enriched from activated sludge (Dradenau, Hamburg) at 28°C with 3 mM of sodiumnitrite. From the laboratory of Eva Spieck, Universität Hamburg. For classroom use.
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Download Poster: PDF
Presented at the RCN Director's Meeting, 2007.

Download Poster: PDF
Presented at ASE 2007.
Adam Schreiner-McGraw; High School Student
Corvallis OR USA


link to larger diagram











Nitrosomonas europaea dividing.
EM picture
Oregon State University