using 125i-labeled human recombinant il-2 and 125i-labeled 33b3.1 ( a moab directed against tac antigen ) , we found that expression of both high and low affinity sites was decreased when clone cells were stimulated with d.blcl in the presence of csa and exogenous il-2 ( about 50 % inhibition in the presence of 500 ng/ml of csa ) .
C0086418
human
C0021756
il-2