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Effect of TCS and GrzB on the expression of apoptosis-associated proteins. a, b. The positive signals of cleaved caspase3 were greatly reduced in TCS/GrzB group. (cleaved caspase-3: red; DAPI: blue). Bar = 50 μm. c, d. Western blotting analysis to detect caspase3, caspase7 and PCNA in tumor tissues after various treatments. Data are expressed as mean ± standard error of the mean. *, p < 0.05; **, p < 0.01
