Relationship of adenoviruses to respiratory illness in ten naval recruits sampled repeatedly during training.
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Biomedical subjects
Publications and source records attributed to M FRIEDMAN.
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The action of an enzyme essential for tryptophan biosynthesis is inhibited by tryptophan and also by an analog of tryptophan. Similarly, histidine and one of its analogs inhibit the action of an enzyme essential for histidine biosynthesis. A mutant resistant to the histidine analog produces an apparently altered enzyme which is insensitive to both the analog and histidine.
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