Publications

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[isolation of atmospheric-nitrogen-fixing spirilla from the waters of the paraná delta and other rivers].seventeen strains of spirillum-like organisms (2) were isolated from the parana delta and other rivers (table 1), using the following medium: 0.5% malic acid; 0.4% koh; 0.5% k2hpo4; 0.005% yeast extract; ph was adjusted to 7 with koh and 0.15% agar. the organisms produced a white, dense and sub-superficial pellicle in this medium, and streaking them on plates, single colonies could be isolated. they were easily recognized thanks to the congo red added to the medium, because the bacteria, as it h ...19846400725
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