“…It improves growth of deficient rats,W and increases the urinary excretion of N'-methylnic~tinarnide.~~ The growth response obtained with 3-hydroxyanthranilic acid is of the order of that obtained with tryptophan. Subcutaneous 90, 92 or intraperitoneal 86 injection proved to be more effective than oral administration, suggesting that the intestinal flora was not involved.…”