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The expression of iNOS and ARG-1 in the tumor microenvironment detected by RT-PCR. (a) The expression of iNOS. (b) The expression of ARG-1. The bar chart shows that both CTX and YHD could suppress the expression of iNOS and ARG-1 in tumor tissue. Data are expressed as the mean ± SEM of 3 experiments (∗p < 0.05 compared with the control group).
