Tissue distribution and circulation of radiolabeled scFv/TM and sTM in mice. (A) Organ distribution of ¹²⁵I-scFv/TM and sTM 3 hours after intravenous injection. (B) Kinetics of blood clearance of scFv/TM and sTM (n = 3). Inset: APC levels in plasma 10 minutes after injection of thrombin 1 hour after injection of scFv/TM or sTM (n = 5).