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A NEW ESTROGENIC SUBSTANCE PRESENT IN THE NEUTRAL FRACTION OF HUMAN PREGNANCY URINE

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Science  20 Dec 1940:
Vol. 92, Issue 2399, pp. 585-586
DOI: 10.1126/science.92.2399.585

Abstract

In addition to the well-defined phenolic estrogens in human pregnancy urine there appears to be another estrogenic substance which is a neutral non-ketonic compound.