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Pinocembrin (PCB) inhibits proliferation of xenografted MCF-7 cells in vivo. (A) Photograph of excised tumors from the PCB and control groups. Histogram illustrating the weight of the excised tumors. (B) Growth curves of subcutaneous tumors. (C) Ki67 expression in xenografts of the two groups by IHC analysis. *p < 0.05, **p < 0.01 vs. the control group.
