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    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 172 (1953), S. 716-719 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE accepted signs of vitamin A deficiency are (1) defective low-intensity vision, (2) retarded growth leading to loss of weight, (3) hyperkeratosis (keratinizing metaplasia), and (4) xerophthalmia. The usual biological assay is carried out on rats depleted to the point of rapid loss of weight. ...
    Type of Medium: Electronic Resource
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