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Science ; 165(3896): 908-9, 1969 Aug 29.
Article in English | MEDLINE | ID: mdl-17777006

ABSTRACT

The continuous growth in a medium free of combined nitrogen and the experimental production of ethylene via acetylene reduction indicate that nitrogen fixation by blue-green algae is not solely confined to filamentous genera with heterocysts. Axenic cultures of Gloeocapsa sp., adapted to nitrate-free medium, form ethylene at rates comparable to those of species known to fix nitrogen.

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