Supernatants from these cultures were assayed for secreted TGF-alpha and TGF-beta1 using TGF -specific ELISAs .
supernatants from these cultures were assayed for secreted tgf-alpha and tgf-beta1 using tgf -specific elisas .
O O O O O O O O B-protein_molecule O B-protein_molecule O B-protein_family_or_group O O O