Anthropometric analysis of the body weight and testicular weight in the young and aged mice. (A) Analysis of body weight in control, young mutant, aged mutant and aged mutant with melatonin. (B) Analysis of the testicular weight. (C) Ratio of the testicular weight to the body weight. * p<.05, ** p<.01 and *** p<.001 vs. Control; ## p<.01 and ### p<.001 vs. Young; Ф p<.05 and ФФФ p<.001 vs. Aged.