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A monoclonal antibody recognizing an iscosapeptide sequence in the heavy chain of human factor XII inhibits

R A Pixley1, R W Colman

  • 1Thrombosis Research Center, Temple University School of Medicine, Philadelphia, Pennsylvania 19140.

A monoclonal antibody (mAb B7C9) to human factor XII was produced which blocked the surface mediated coagulant activity of factor XII but not the amidolysis of H-D-ProPheArg-pNA. The mAb epitope was localized to a 20 amino acid sequence of 2.5 kDa in the heavy chain of factor XII.

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