c-prop-in-epmc yes pmc-license-ref CC BY 116 INDUCTION OF MAMMOGENESIS BY PROLACTIN AND BY HUMAN URINE STRETTON YOUNG From the Clinico-pathological Laboratories of the Imperial Cancer Research Fund, Lincoln's Inn Fields, London, W.C.2 Received for publication February 1, 1957 HIGHLY significant growth responses in the rudimentary mammary glands of intact weanling male mice of the S.A.S.3 strain have been induced by pituitary prolactin when administered twice daily for five days by subcutaneous injection (Hadfield and Young, 1956).
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