Moreover , we found that the ectopic expression of Smad7 , but not Smad6 , inhibited the activin A -induced Smad2 phosphorylation in HS-72 cells .
moreover , we found that the ectopic expression of smad7 , but not smad6 , inhibited the activin a -induced smad2 phosphorylation in hs-72 cells .
O O O O O O B-other_name I-other_name O B-protein_molecule O O O B-protein_molecule O O O B-other_organic_compound I-other_organic_compound O O O O B-cell_line I-cell_line O