Figure 8.
Peroxisome-deficient cell mutants show resistance to exogenous H2O2. CHO-K1, pex14 ZP161, and pex2 Z65 cells were treated with 1 mM H2O2 in the presence and absence of 50 mM 3-AT, a catalase inhibitor. Cell viability was determined by MTT assay and represented as percentages relative to those of mock-treated, H2O2-untreated cells. Data represent means ± SD.