Cu/ZnSOD, MnSOD, catalase, and GPX activity in tissues of the Tg(TRX1)+/0 mice. The activities of Cu/ZnSOD (Graph A: left, top), MnSOD (Graph B: right, top), catalase (Graph C: left, bottom), and GPX (Graph D: right, bottom) were measured in tissue extracts from young mice (4–6 months old). Cu/ZnSOD and MnSOD activity gels are shown with their respective graphs. Data are the mean ± SEM of three Tg(TRX1)+/0 and three wild-type (WT) mice. The activities of Cu/Zn-SOD, MnSOD, catalase, and GPX were similar between Tg(TRX1)+/0 (closed bar) and WT mice (open bar).