Fig. 4

Evaluation of the effect of BMSCs combined with estrogen on endometrial morphological recovery. A HE staining was performed to detect the endometrial glands in each group at different time points (× 100, scale bar = 100 μm). B Masson staining was performed to detect intrauterine fibrosis changes in each group at different time points (× 100, scale bar = 100 μm). C Statistical results of changes in the number of endometrial glands. D Statistical results of intrauterine fibrosis changes after endometrial damage. ^*p < 0.05, ^**p < 0.01, ^***p < 0.001