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Viability in HT29 cells. A) Viability was assessed in HT29 cells transfected with dextran-spermine at a concentration of 15 μg/mL. B) CT26.WT cells transfected with nontarget control siRNA. C) CT26.WT cells transfected with CXCR4 siRNAs I and II and with CXCR4 siRNA/dextran-spermine.
