Differences in testis and epididymis weight observed between experimental groups. Epididymal (A) and testicular (B) weight in the four groups of animals analyzed (control, LGF treatment, busulfan treatment, busulfan plus LGF treatment). a, b, cDifferent letters indicate significant differences between groups based on one-way ANOVA (P ≤ 0.01). Error bars, SEM. LGF: liver growth factor.