Blood clearance of ¹³¹I-BC8-Ab and ¹²⁵I-BC8-FP. Blood clearance of ¹³¹I labeled BC8 antibody (○) and ¹²⁵I labeled BC8-FP (●) in a fascicularis macaque after coinjection of equimolar concentrations (8.45 nmol/kg) of BC8-Ab and BC8-FP into the same animal. Results are expressed as percentage of injected dose per gram (%ID/g) and were analyzed by dual-channel gamma counting.