Figure 3From: Role of drug transporters and drug accumulation in the temporal acquisition of drug resistance Levels of drug transporters at various selection doses in cells selected for progressive resistance to paclitaxel, docetaxel, doxorubicin, and epirubicin (MCF-7 TAX-2 , MCF-7 TXT , MCF-7 DOX-2 , and MCF-7 EPI cells, respectively). MCF-7TAX-2, MCF-7TXT, MCF-7DOX-2, and MCF-7EPI cells are represented by black, white, grey, and grey striped bars, respectively. The symbol * denotes changes in gene expression that vary significantly from levels in cells selected to dose 8 (p < 0.05).Back to article page