Figure 1. Effect of Cleistanthus collinus on sperm motility and sperm morphology of Wistar rats. Data are expressed as mean ± SD, n=6. *p< 0.05, **p<0.001 compared with control group. The statistical test used was One way ANOVA with Tukey Krammer post hoc test. Cyclo-cyclophosphamide, 100 mg/kg, CC 200-Cleistanthus collinus, 200 mg/kg CC 400- Cleistanthus collinus, 400 mg/kg.