Fig. 7.

Sex differences in MOR binding density. MOR binding density is higher in females than in males in the PMCo (a) and higher in males than in females in the LS (b). Cohen’s D effect size measurements for significant sex differences collapsed across age and separately in juveniles and adults (c). Representative autoradiograms of MOR binding in the PMCo in an adult male and an adult female (d). Bars in a, b indicate mean + SEM; two-way ANOVA (age × sex) with FDR correction for multiple comparisons: *FDR α < 0.013