Wang Yue et al. showed that Streptococcus thermophilus CGMCC 7.179, under oxidative stress induced by 2 mm H2O2, could improve the activities of major antioxidant enzymes (superoxide dismutase, glutathione peroxidase and catalase) in CRC HT-29 cells and protect CRC cells against oxidative stress [45, 46]. The gene discussed is CAT; the disease is colorectal carcinoma.