Figure 1: Effect of folic acid against sodium fluoride-induced changes in 3β-HSD (A) and 17β-HSD (B) activities of the testes. The values are expressed as mean±SD (n=6 in each group). Data are analyzed by one-way analysis of variance followed by Dunn’s post-hoc multiple comparison test. a: Compared to the control group, P<0.001; b: Compared to the sodium fluoride group, P<0.001. HSD: hydroxysteroid dehydrogenase.