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HGF/c-Met regulates airway progenitor cells. (A) The c-Met expression in airway progenitor cells, alveolar type 2 (AT2) cells, ciliated cells, and MLg cells using quantitative reverse transcription-quantitative polymerase chain reaction. (B) CFE of airway progenitor cells is increased in presence of HGF in stromal free 3D Matrigel culture. Data are expressed as the mean ± standard error of the mean. HGF, hepatocyte growth factor; CFE, colony forming efficiency.
