Fig. 4

The impact of rhBDNF treatment on fertility in aged mice. (A) Days of caging until pregnancy. (B) Pup weight. (C) Litter size. (D) Pregnancy rates. (E) The number of mice caged until pregnancy at the 4th day or 8th or 12th day. (F) A table summarizing the days of caging until pregnancy, pup weight, litter size, and pregnancy rates. Data are presented as mean ± SD, * indicates P < 0.05, ** indicates P < 0.01