Marine Endolithic Cyanobacteria - 7

Scytonema endolithicum Ercegovic, a filamentous, heterocystous, N - fixing cyanobacterium penetrats coastal limestone in the supratidal, wave spray zone near Marseille, France. The organism is extracted from the rock using dilute HCl, and mounted on microscope slide. Filaments are about 10 micrometers wide.

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