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Effect of PTX, TQ, and their combination on the expression of CD44 and CD24 stem cell markers. MCF-7 (A) and T47D (B) cells were exposed to PTX, TQ, or their combination for 24 h. Expression levels of CD44 and CD24 were assessed using flowcytometry and plotted as percentage of total events. Data are presented as mean ± SD; n = 3. (*) significantly different from the control group. (**) significantly different from PTX treatment.
