The EGFR and HER2 expression of A431, U343, SKOV3 and SKBR3 cells in four culturing conditions.

Estimation of EGFR and HER2 receptors were conducted either manually or by the KEX method using LigandTracer. Estimations of the affinities have been described previously [22]. Data are presented as mean±S.E (n = 2−6). No clear effects of the treatments on the EGFR and HER2 expression is observed in either of the cell lines.