Abstract
VITAMIN B12 is required as an essential growth factor by Euglena gracilis variant bacillaris1. No other substance has been found to stimulate the growth of this alga in the absence of B12.
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References
Hutner, Provasoli, Stokstad, Hoffmann, Belt, Franklin and Jukes, Proc. Soc. Exp. Biol. and Med., 70, 118 (1949).
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ROSS, G. Vitamin B12 Assay in Body Fluids. Nature 166, 270–271 (1950). https://doi.org/10.1038/166270a0
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DOI: https://doi.org/10.1038/166270a0
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