tokens: The phorbol ester , PMA , was also a potent inducer of Fos kinase activity in all of the above populations , suggesting that PKC plays a role in the regulation of this enzyme .
folded_tokens: the phorbol ester , pma , was also a potent inducer of fos kinase activity in all of the above populations , suggesting that pkc plays a role in the regulation of this enzyme .
labels: O B-other_organic_compound I-other_organic_compound O B-other_organic_compound O O O O O O O B-protein_molecule I-protein_molecule O O O O O O O O O O B-protein_molecule O O O O O O O O B-protein_family_or_group O