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if hemopihilia? not color blind
Estrous cyclicity was studied to examine the possibility that strain differences in the regularity of the mouse estrous cycle are the result of different olfactory signals produced by the male. Females with irregular cycles (line CN-) were housed in the presence of males from a line with regular cycles (line E) or were exposed to males of their own line. The regularity of the estrous cycle decreased in line E females (regular cycles) when exposed to line CN- males (irregular cycles). The decreased regularity of line E cyclicity resulted from an increased period of diestrus, i.e., lengthening of the cycle.
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