Figure 2 Effect of Solanum nigrum extract treatment on renal reduced glutathione (GSH) content. Data were expressed as mean±SE (n=6). Statistical analysis was carried out by one-way analysis of variance followed by Tukey’s HSD test for multiple comparisons. aSignificantly different from normal control at P value less than 0.05. bSignificantly different from urolithic control at P value less than 0.05. HSD, honest significant difference.