At a magnification of 2000X, this scanning electron micrograph (SEM) of an untreated water specimen extracted from a wild stream mainly used to control flooding during inclement weather, revealed the presence of unidentified organisms, which included bacteria, protozoa, and algae. Though unidentified, this view depicts a section of a suspected green algae, Ankistrodesmus. Note the bacteria inhabiting the biofilm coating in the bachground. See PHIL 11710 for a colorized version of this image.
CDC/ Janice Haney Carr
December 3, 2012
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