a mouse t-lymphocytic line , el-4 , expressed human il-2r with high ( dissociation constant ( kd ) = 160-220 pm ) and low ( kd = 2.1-2.2 nm ) affinity for recombinant human il-2 , while mouse l929 cells expressed only a single class of the il-2r with lower affinity ( kd = 34.5 nm ) for the ligand .
C0218986
2
C0034819
il-2r