for the determination of their possible utility as tumors markers , 2 neural-associated isozymes , neuron-specific enolase [ ( nse ) ec 4.2.1.11 ] and creatine kinase bb [ ( ck-bb ) ec 2.7.3.2 ] , were quantitated by radioimmunoassay in human neuroectodermal-derived cell lines , primary brain tumors , and sera and cerebrospinal fluid ( csf ) from brain tumor patients .
C0010287
creatine kinase
C0010289
ck-bb