Inhibition of the binding of ¹²⁵I-bitiscetin to immobilized vWF by peptides, bitiscetin, or botrocetin. The method was that described in the legend of Fig 6. (A) peptides aa 474-488 (▴); aa 494-511 (○); aa 569-583 (•); aa 628-655 (▪), and aa 692-708 (◊). (B) botrocetin (▪) and bitiscetin (○).