Abstract
The firm identification of the heterocysts as the sites of nitrogenase activity marks them out also as the site of nitrogen fixation in blue green algae.
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STEWART, W., HAYSTEAD, A. & PEARSON, H. Nitrogenase Activity in Heterocysts of Blue–Green Algae. Nature 224, 226–228 (1969). https://doi.org/10.1038/224226a0
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DOI: https://doi.org/10.1038/224226a0
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