Fig. 4

Effect of low intensity pulsed ultrasound (LIPUS) on follicle growth and ovary in (premature ovarian failure) POF mice. a-f the pathological changes of ovaries (a-c: 40 ×) and follicles (d-f: 100 ×) were evaluated by H&E staining in the three groups. g the number of follicles at various stages were counted and compared in the three groups. *p < 0.05, **p < 0.01