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Promotion of cell proliferation by wild-type and mutant NK1 (A) or HGF (B). Mv1Lu cells were cultured for 72 h, and the value obtained without NK1 or HGF was regarded as 1.0. Data represent mean ± s.e.m. (n = 3, unpaired two-tailed t-test). The experiment was independently repeated twice, and similar results were obtained.
