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Contact: Nicole (Staab) Cassis
nstaab@asu.edu
602-710-7169
Arizona State University

Cyanobacteria

Caption: The orange cells in this microscope image are Synechococcus, a unicellular cyanobacterium only about 1 um in size. Organisms like Synechococcus were responsible for pumping oxygen into the environment 2.5 billion years ago.

Credit: Susanne Neuer/Amy Hansen

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