The effect of TA on the sperm quality. Sperm density (4), Sperm abnormality rate (5), and Sperm mortality rate (5) in the epididymis of male Lasiopodomys brandtii provided low dose (3 mg/mL) and high dose (6 mg/mL) tannic acid (TA). Error bars indicate standard error. Same letters connect bars with no significant differences at p < 0.05 (n = 6).