Word: substan
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Dates: during 1933-1933
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...Scientists agree that Vitamin A is essential to growth. Because an experimental animal deprived of it is susceptible to infection, some wishful-thinking investigators have assumed that Vitamin A is also "anti-infective," have cried it up as a weapon against respiratory infections. Experiments have by no means substan tiated their claims. Researchers in Manhattan lately reported that children dosed with Vitamin A (in fish liver oils) and "primary Vitamin A" had proven no more resistant to respiratory infections than a "control" group which went without...
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