Figure 1From: Possible mechanism underlying the effect of Heshouwuyin, a tonifying kidney herb, on sperm quality in aging rats Testicular parameter changes in different groups. YCG: young control group; NAG: natural aging group; SWPG: Shouwu pill group; SWY1G: Heshouwuyin group 1; and SWY2G: Heshouwuyin group 2. Data are expressed as the mean ± SD (n = 10 in each group). Columns with different letters represent statistically different values, while same letters indicates no significant difference.Back to article page