Fig. 6.
Inhibitory effects of autoantibodies on binding of FVIII fragments to anhydro-APC.
Serial dilutions of autoantibody F(ab′)2 were incubated with 0.2 μM intact FVIII (A), 80-kd LCh, or 72-kd LCh (B) for 2 hours at 37°C before being added to immobilized anhydro-APC. Case 1, ○; case 2, ●; case 3, ■; type 1 autoantibody F(ab′)2, ▪.