CAT and Bloom syndrome: The activity of catalase in the lung tissue, as shown in Figure 3, was significantly reduced by BLM treatment when compared with control (0.40 ± 0.06 vs 0.68 ± 0.20 μmol/min/g protein, respectively, p = 0.05), while in BLM/RO1 and BLM/RO2 groups, this activity is significantly restored when compared to the BLM group (0.70 ± 0.10 vs 0.40 ± 0.06 μmol/min/g protein p = 0.02 and 0.80 ± 0.20 vs 0.4 ± 0.06 μmol/min/g protein, p = 0.002, respectively).