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Clotting factor V activity in plasma cryoproteins
  1. A. Von Felten,
  2. P. W. Straub,
  3. P. G. Frick
  1. Department of Internal Medicine, Kantonsspital, University of Zurich, Switzerland


    Plasma cryoprecipitates containing considerable quantities of clotting factor V were observed in five patients. The unusual factor V activity was not associated with significant amounts of cryofibrinogen. Clinically, the symptoms were not distinguishable from those of other cryopathies. The abnormality did not lead to a deficiency of factor V in the circulating blood nor to a haemorrhagic diathesis.

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    • 1 Study supported by the Hartmann-Mueller Foundation for medical research.