Fig. 5

Statistics of estrous cycle in different group of rats. a H&E staining of vaginal smears (× 100×). b Compositions of estrous cycle in different groups (n = 8; P, proestrous; E, estrous; M, metaestrous; DI, diestrous). c Typical estrous cycle patterns in normal rats and in four treatment groups. Data were represented as mean ± SD, *p < 0.05, **p < 0.01, ***p < 0.001