However , there are other effects , such as the early activation of protein kinase C , which are probably derived from the production of primary DNA breakage by some anti- topoisomerase drugs .
however , there are other effects , such as the early activation of protein kinase c , which are probably derived from the production of primary dna breakage by some anti- topoisomerase drugs .
O O O O O O O O O O O O O B-protein_molecule I-protein_molecule I-protein_molecule O O O O O O O O O O O O O O B-other_organic_compound B-protein_family_or_group O O