Fig. 6.

Transplantation of hAD-MSCs reduces reproductive organ injuries in POI rats. a,b The pathological changes of ovaries (a; 40×) and uteruses (b; 100×) were evaluated by H&E staining in the four groups at 1 month after hAD-MSC transplantation. c The number of follicles at various stages were counted and compared in the four groups. Scale bars = 100 μm. *P < 0.05, **P < 0.01. hAD-MSCs human adipose-derived mesenchymal stem cells, LIPUS low-intensity pulsed ultrasound, POI primary ovarian insufficiency