Factor IX

One of the proteins in the blood which is involved in clotting (deficient in haemophilia B).

factor IX

Type: Term Definitions: 1. in the clotting of blood, also known as: Christmas factor (Biggs and Macfarlane), plasma thromboplastin component (Aggeler), antihemophilic globulin B (Cramer), plasma thromboplastin factor B (Aggeler), plasma factor X (Shulman), antihemophilic factor B, and platelet cofactor II. Factor IX is required for the formation of...
Found on http://www.medilexicon.com/medicaldictionary.php?t=31709

factor ix

<chemical> Storage-stable blood coagulation factor acting in the intrinsic pathway. Its activated form, ixa, forms a complex with factor viii and calcium on platelet factor 3 to activate factor x to xa. Deficiency of factor ix results in christmas disease (haemophilia b). ... Chemical name: Blood-coagulation factor IX ... (12 Dec 1998) ...
Found on http://www.encyclo.co.uk/local/20973

factor IX

plasma thromboplastin component, a coagulation factor that is relatively storage-stable and is involved in the intrinsic pathway of coagulation. Upon activation, it activates factor X. Deficiency results in hemophilia B. Called also Christmas factor and antihemophilic factor B.
Found on http://www.encyclo.co.uk/local/21001

Factor IX

Factor IX (or Christmas factor) ({EC number|3.4.21.22}) is one of the serine proteases of the coagulation system; it belongs to peptidase family S1. Deficiency of this protein causes hemophilia B. It was discovered in 1952 after a young boy named Stephen Christmas was found to be lacking this exact factor, leading to hemophilia. == Physiology == F...
Found on http://en.wikipedia.org/wiki/Factor_IX
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