AUGMENTATION OF PITUITARY GONADOTROPIC HORMONE BY CHLOROPHYLL, PLANT GROWTH HORMONES1AND HEMIN2

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Abstract
In expts. with 137 rats and 277 chicks it was found that the effectiveness of pituitary gonadotropic extract was increased in the immature [female] rat and in the chick (as measured by gonad wt. and comb growth) after admixture in vitro with alc. or water-soluble chlorophyll, 2 of the plant growth hormones[long dash]indolebutyric acid and 1-naphthalene acetic acid[long dash]and hemin with pyridine added. Chlorophyll injected separately from pituitary extract did not produce augmentation. Hemin, injected with the hormone but without pyridine added, did not increase the gonadotropic action of the soln. The action of plant growth hormone when given separately was questionable.

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