Light micrograph of Anabaena, individual filaments, showing lack of nuclei, & heterocysts. Mag: X 175.

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Photo credit: © JOHN WALSH/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: alga, algae, algal, anabaena, blue-green, botany, cyanobacteria, heterocyst, light, micrograph, nature, nitrogen-fixing, plant, sp.