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. 1960 May 20;131(3412):1526.
doi: 10.1126/science.131.3412.1526.

Role of olfactory sense in pregnancy block by strange males

H M BRUCE, D M PARROTT

Role of olfactory sense in pregnancy block by strange males

H M BRUCE et al. Science. .

Abstract

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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