Figure 6a shows the ratio (FC-fold change) of POST/PRE proteomic quantifications from the varicocele group at 3 (3 M) and 6 months (6 M) after surgery for different proteins involved in antioxidant defense, such as TXN, PRDX1, PRDX3 and PRDX6. This evidence concerns the gene PRDX1 and varicocele.