in order to study if enzymes of purine metabolism could be used as cell markers in b-chronic lymphocytic leukemia ( b-cll ) , the activities of adenosine deaminase ( ada ) , purine nucleoside phosphorylase ( pnp ) , and 5'-nucleotidase ( 5 ' n ) were repeatedly measured in blood mononuclear cells from b-cll patients and were compared to those obtained in normal controls .
C0007634
cell
C1321301
blood mononuclear cells