The requirements for vitamin B12 vary among algal species in a seemingly inexplicable pattern. A study that exploits genomic data now provides enlightenment — and evidence of symbioses with bacteria.
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Andersen, R. Algae and the vitamin mosaic. Nature 438, 33–35 (2005). https://doi.org/10.1038/438033a
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DOI: https://doi.org/10.1038/438033a
