upon cell incubation at 37 degrees c , both covalent labels were lost from cells with diphasic kinetics : a minor component ( 35 % of cell-associated labels ) was rapidly released ( half-life less than 1 h ) , and most label ( 65 % ) was released slowly ( half-life was 20 h for incorporated 125i and 27 h for 3h ) .
C0022702
kinetics
C0018517
half-life