Statistical Analysis
Statistical analyses were performed using one-way analysis of variance (ANOVA; SigmaStat Windows Version 3.00; Systat Software), followed by Newman-Keuls multiple comparison test (for serum testosterone, LH and for Leydig cell testosterone measurements). Intratesticular testosterone levels were analyzed by Mann Whitney (nonparametric) test due to small sample size. For Western blots, we used a modified t test to compare the experimental groups with the normalized control ratio. The data were expressed as the mean ± standard error of the mean (SEM). A value of P < 0.05 was considered to be statistically significant. The original data of the article are in S1 Dataset.