The effect of fibroblast phenotype on growth factor profile in culture medium. (A) bFGF concentration in conditioned medium 48 h or 72 h after scratch wound. (B) HGF concentration 48 h or 72 h post wounding. (C) PDGF-AA concentration 72 h post wounding. (D) total TGF-β1 concentration 48 h and 72 h post scratch wound. Results are representative of triplicate experiments, each with multiple donors. * P <0.05, ***P <0.001 compared with A549-NHLF.