Epithelial-Mesenchymal Transition Occurs in Undifferentiated Basal Airway Epithelial Cells Derived from Normal and Asthmatic Subjects. - Hackett, T.-L.; Stefanowicz, D.; Shaheen, F.; Pechkovsky, D.; Warner, S.M.; Murray, L.; Kicic, Anthony; Stick, S.; Bai, T.R.; Knight, D.A. (AMER THORACIC SOC, 2009)