TNF and varicocele: Expression of HSP90,KITLG, the KIT-receptor gene and TNF transcriptsin varicocele-induced testes was significantlylower than non-varicocele testes (P=0.029, 0.047,0.004 and 0.035 respectively) with fold-changesof 0.62, 0.83, 0.71 and 0.76 respectively.