EGFR and neoplasm: Co-existence of p-EGFR signal (Fig. 7D, a) and nuclear C/EBPβ signal (Fig. 7D, b) can be found in a large fraction of the tumor cells which were analyzed, which implies the parallel presence of EGFR and C/EBPβ co-activation in these tumor cells (Fig. 7D, c, d).