Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Microphotographs of the three cyanobacteria from which genome sequence information is included in the present review. (A) Synechocystis strain PCC 6803; (B) Anabaena strain PCC 7120; (C) Nostoc punctiforme PCC 73102/ATCC 29133. Note the presence of heterocysts (arrows) in the nitrogen-fixing cultures of Anabaena strain PCC 7120 and Nostoc strain PCC 73102. Bar, 10 μm.
