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In the livers of the scorbutic guinea pigs the activity of p-hydroxyphenylpyruvic acid oxidase was found to remain unchanged but profoundly reduced after the feeding of extra tyrosine. Glucose cycloacetoacetate hydrolysate, a reducing compound, when ingested simultaneously with tyrosine was found to prevent the reduction in the enzyme activity. This effect was comparable to that of ascorbic acid.

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57P last 2 weeks of a 4-week incubation period. Simazin depressed the actinonlycete population in the beginning and stimulated it during the last 2 weeks. The others did not have any effect on actinomycete population. Fungal population was stimulated by Tok-E-25, whereas Benlate depressed it initially and

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