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Science 7 March 1969:
Vol. 163. no. 3871, pp. 1083 - 1084
DOI: 10.1126/science.163.3871.1083
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Articles

Prolactin in the Postpartum Rat: Synthesis and Release in the Absence of Suckling Stimulation

Howard Moltz 1, Robert Levin 1, and Michael Leon 1

1 Department of Psychology, Brooklyn College of the City University of New York, Brooklyn, New York 11210

Postpartum female rats deprived of suckling stimulation while being kept continuously with pups nonetheless suspended ovarian cyclicity for an average of 16 days and responded to uterine trauma by forming deciduomata. These results show that the extramammary stimulation afforded by young is alone capable of sustaining prolactin output from the adenohypophysis of the postpartum rat.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)