Viability of  AGS (A) and HCT (B) cells exposed to 0.001, 0.1, 1 and 10 mg/ml of testosterone enanthate. *, #, † and $ indicate significant ddifference compared with control, and groups exposed to 0.001, 0.01, 0.1 and 1 mg/ml of testosterone, respectively. (***, P<0.001; ###, P<0.001; †††, P<0.001 and $$$, P<0.001).