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Science 20 May 1960:
Vol. 131. no. 3412, p. 1526
DOI: 10.1126/science.131.3412.1526
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Articles

Role of Olfactory Sense in Pregnancy Block by Strange Males

H. M. Bruce 1 and D. M. V. Parrott 1

1 Division of Experimental Biology, National Institute for Medical Research, Mill Hill, London, England

Pregnancy is blocked in a high proportion of recently mated female mice exposed to strange males. This reaction is virtually abolished by the prior removal of the olfactory bulbs of the female. The smell of the strange male appears to be the primary stimulus in the exteroceptive block to pregnancy in mice.


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Interaction of Olfactory and Other Environmental Stimuli on Implantation in the Deer Mouse.
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Science. ISSN 0036-8075 (print), 1095-9203 (online)