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The CSC population in PCa cells. The fraction of cells expressing CD44 and CD133 markers was analyzed by flow cytometry. Representative histograms and dot plots of (A) DU145 cells, (B) PC3 cells and (C) LNCaP cells, illustrating the identification of multipositive cells. CD44- and CD133-positive cells were subtracted from their respective isotype controls. PCa: prostate cancer.
