MET and small cell lung carcinoma: Using SCLC NCI-H69 cells with and without HGF stimulation as the model, the screening arrays KPSS-1.3 and KPSS-2.0 together allowed detection of strong HGF-induction of specific phosphorylation sites in phosphoproteins downstream of c-MET itself, that are involved in diverse cellular regulation, including transcriptional control, cell cycle G1/S checkpoint, cell survival and apoptosis, cell proliferation and differentiation, stress and inflammatory response to cytokines and growth factors, as well as cytoskeletal functions.