human bronchial epithelial cells transformed by either dna virus infection ( sv40 or adenovirus 12-sv40 hybrid virus ) or transfection with the sv40 large t antigen gene were studied for their ability to undergo squamous differentiation when exposed to 12-o-tetradecanoylphorbol-13 acetate ( tpa ) , transforming growth factor-beta 1 ( tgf-beta 1 ) , or fetal bovine serum ( fbs ) , agents that induce the squamous differentiation of normal human bronchial epithelial cells .
C0086418
human
C1366557
transforming growth