EGFR and breast cancer: The expression levels of EpCAM, NG2, EGFR, FOLR1 and HER2 were determined in four different endometrial cell lines (49Z, 12Z, Ishikawa and T-HESC) and five breast cancer cell lines (MDA-MB-231, MDA-MB-468, Hs578T, MCF7 and MDA-MB-453) (Figure 3, Figure 4 and Figure S2), and summarized in Table 4 and Table S1.