EGFR and neoplasm: The median flurorescence intensity (MFI) of the phospho-EGFR (Tyr) protein in the tumor also significantly decreased after gefitinib treatment: 301.1 ± 131.4 MFI for 100 mg/kg (29% of control); 220.0 ± 70.8 MFI for 200 mg/kg (21% of control); 1052.0 ± 106.2 MFI for control group; p < 0.01 for both treated groups vs. control group.