MET and lung cancer: Next, we tested the inhibitory effects of these 15 natural products on a panel of immortalized nontumor cells (NL20, MRC5, and HBE1) and lung cancer cells with high protein level of c-Met (HCC827OR, H1975OR, and PC9OR), medium level of c-Met (H1650 and A549), or null c-Met (H520).