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Antitumor efficacy of tCA against HT29 human colon carcinoma xenografts in nude mice. (A) Growth curves of HT29 xenografts in different groups (n=6 per group) are shown. tCA treatment suppressed the growth of tumors compared with the control. *P<0.05 and **P<0.01, compared with control. (B) Body weight curves for the treated and the control animals. Values are presented as the mean ± standard deviation. tCA, trans-cinnamic acid.
