Target specific LN uptake of ¹²⁵I-BC8-FP and ¹³¹I-BC8-Ab. With 96-hour target (A) and nontarget tissue biodistribution (B). (A) Concentrations of coinjected ¹²⁵I-BC8-FP (●) and ¹²⁵I-BC8-Ab (○) in LN and blood (▼) specimens after coinjection of equimolar concentrations (8.45 nmol/kg) of BC8-Ab and BC8-FP. Results are expressed as %ID/g as assessed by dual-channel gamma counting 2 to 96 hours after coinjection. (B) Shown are %ID/g for both ¹²⁵I-BC8-FP and ¹²⁵I-BC8-Ab coinjected at equimolar concentrations (96-hour necropsy).