When BODIPY fluorescence was quantified, there was a radiation-induced dose-dependent increase in lipid peroxidation with radiation alone, as seen in Figure 3B. With the addition of catalase, there was a partial reversal of the oxidation seen with BODIPY staining (Figure 3C), suggesting a P-AscH− increased lipid peroxidation in these cancer cells. Here, CAT is linked to cancer.