A specific inhibitor of caspases , zVAD-FMK , prevents triptolide -induced PARP degradation and DNA fragmentation but not growth arrest .
a specific inhibitor of caspases , zvad-fmk , prevents triptolide -induced parp degradation and dna fragmentation but not growth arrest .
O O O O B-protein_family_or_group O B-other_organic_compound O O B-other_organic_compound O B-protein_molecule O O B-other_name I-other_name O O O O O