Figure 5.

The effect of different ovarian hormone treatments on preference for testes-intact male urine (IMU) compared to estrous female urine (EFU) in ovariectomized female mice that had previously received mating experience with a stud male (n = 9). (A) Pheromone preference as determined by the time (in seconds) spent investigating the odor port containing IMU versus EFU in a series of 5 olfactory preference tests after treatment with different ovarian hormones. (B) The total time spent investigating either odor port (IMU + EFU investigation times in seconds) during each of the 5 olfactory preference tests. Data are expressed as the mean ± SEM, while the circles represent individual data points for each mouse. *P < 0.05 for comparisons of investigation times at each odor port on different test days. Abbreviations: EB = estradiol benzoate; P = progesterone; E2 = estradiol.