Abstract
Summary
When nicotinic acid is lacking in a substrate otherwise suitable for growth, the addition of glucose inhibits the growth of organisms capable of fermenting this sugar in the presence of nicotinic acid. The degree of inhibition is 5 to 1000 fold, and depends on the organism and the medium. With Proteus XK the inhibition was 5-10 fold; with dysentery organisms and with staphylococci 100-1000 fold.
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