Fig. 2

The impacts of rhBDNF treatment on ovarian functions in aged mice. (A) H&E staining of ovaries. (B) The number of primordial, primary, second, and antral follicles (n = 3). (C) Serum estradiol (E2) levels (young/control, n = 8; aged/control, n = 5; aged/rhBDNF, n = 7). (D) Serum progesterone (P4) levels (n = 4). Data are shown as mean ± SD. * indicates P < 0.05, ** indicates P < 0.01