Abstract
Tannate complexes of human pituitary gonadotropin (HPG) of urinary origin were assayed by 3 general gonadotropin assay methods-the rat ovarian and uterine weight methods and the mouse uterine weight method. Assays were also performed by injecting single doses · of tannated and untannated HPG and determining the magnitude of the response at daily intervals. It was found that tannation did not alter the potency of HPG as measured in these 3 assay systems. The results obtained with single-dose assays confirmed those obtained by conventional assays. (Endocrinology 77: 766,1965
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