Figure 4

Evaluation of the TGF-β1 signaling pathway in cells experimentally induced to doxorubicin resistance (DOX-res). TGF- β1 signaling pathway related genes showing significantly different expression in MCF-7 and MDA-MB-231 DOX-res group compared with cells in the initial passage (P0), evaluated by RT-PCR array. Data are expressed as fold-change.