mRNA content for mitochondrial genes were not different between groups (Figure6c); however, mitochondrial proteins MnSOD, Prdx3, and CoxIV were decreased by ~20–50% in WT and Sod1KO tumour‐bearing mice when compared with WT saline and Sod1KO saline mice, respectively (P = 0.02–0.049, Figure6D). This evidence concerns the gene PRDX3 and neoplasm.