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Expression of p21 in MCF-7 cells after MSI-1 knockdown, compared to controls. Cells were transfected with a control siRNA and MSI-1 siRNA, respectively. Then, western blot measurements and quantification were performed as detailed in the Methods section (n = 3, *p < 0.05, error bars indicate s.e.m.). Overall results are shown in panel A; representative measurements are shown in panel B
