RNA expression pattern of the bcl-2 family genes in the testis.

The expression of the anti-apoptotic gene bcl-2 (A), pro-apoptotic genes bax (B), bid (C), bim (D) and bak (E) in the testis were determined with quantitative real time PCR. Target gene expression levels were normalized with the endogenous control ß-2-microglobulin (ß2M). Data are present as 2^ΔCt, ΔCt = Ct_{target gene}-Ct_ß2M. The Mann-Whitney U test was employed for statistical analysis (* p<0.05). Each single symbol (circle and triangle) represents one individual testis sample.