Fig. 2From: Assessment of the toxicity effects of nicotine on sperm and IVF and the potential protective role of silymarin—an experimental study in miceComparison of various types of sperm motility grades in study groups. Data show the mean ± SD (n = 10). aP < 0.001 and bP < 0.05 as compared to normal control group, respectively, cP < 0.05 as compared to nicotine-treated group (Group 2) and dP < 0.05 as compared to 5 groupBack to article page