Abstract
IN carrying out a series of assays, by the curative method, of the vitamin A content of various samples of fish oils and dried milk, it was found that in a large proportion of cases the weight curve did not give a reliable indication of the state of depletion of the vitamin A stores of the animal, and that increase in weight after administration of a supplement could not always be ascribed to its vitamin A content.
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ORR, J., RICHARDS, M. Assay of Vitamin A. Nature 133, 255 (1934). https://doi.org/10.1038/133255b0
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DOI: https://doi.org/10.1038/133255b0
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