MET and neoplasm: Yet, the expression of c-MET by western blot analysis was limited, based on two independent antibodies on the same blot, showing only a very faint (nonspecific) band between 130 and 180 kDa or between 100 and 130 kDa (expected molecular weights are 145 kDa for the mature c-MET β-subunit and 170 kDa for the pro-c-MET) in both treated and untreated primary tumor samples (Supplementary Fig. 1b).