tokens: We demonstrate that both R and Z activate the cellular stress mitogen activated protein ( MAP ) kinases , p38 and JNK , resulting in phosphorylation ( and activation ) of the cellular transcription factor ATF2 .
folded_tokens: we demonstrate that both r and z activate the cellular stress mitogen activate protein ( map ) kinase , p38 and jnk , result in phosphorylation ( and activation ) of the cellular transcription factor atf2 .