Cross-reacting material in congenital factor VIII deficiencies (Haemophilia A and von Willebrand's disease)
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TL;DR
Using a heterologous specific and precipitating anti human Factor VIII antiserum, the presence of cross-reacting material (C.R.M.) was detected in cryoprecipitate as well as in plasma of 83 patients with Haemophilia A and 15 patients with von Willebrand's disease.
Abstract
Using a heterologous specific and precipitating anti human Factor VIII antiserum, the presence of cross-reacting material (C.R.M.) was detected in cryoprecipitate as well as in plasma of 83 patients with Haemophilia A (49 without and 34 with a circulating Factor VIII antibody). The ratio of Factor VIII activity to antigen was lower in known carriers of Haemophilia than in normal women. In 15 patients with von Willebrand's disease, C.R.M. was absent or seemed only to be proportional to the amount of biologically active Factor VIII.
