Figure 1. Chestnut polysaccharides (CPs) improved sperm quality. (A) Sperm motility (% of total cells; grade A + grade B). X-axis represents the treatment groups; Y-axis represents sperm motility. Data are represented as mean ± SEM, *P < 0.05, **P < 0.01. (B) Sperm concentration. X-axis represents the treatment groups; Y-axis represents sperm concentration (million/ml). Data are represented as mean ± SEM, *P < 0.05, **P < 0.01. (C) Photos of sperm quality. (D) Histopathology photos of mouse testes.