factor IX

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factor IX

A protein substance in blood plasma that participates in and is essential for the blood-clotting process. A deficiency of this factor is the cause of Christmas disease.

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Noun

factor IX - coagulation factor whose absence is associated with hemophilia B

Christmas factor

clotting factor, coagulation factor - any of the factors in the blood whose actions are essential for blood coagulation

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bleeder's disease
Christmas disease
Christmas factor
clotting factor
coagulation factor

haemophilia
haemophilia B
hemophilia
hemophilia B

Although his coagulation values had been normal prior to surgery, detailed laboratory tests revealed that he had a mild factor IX deficiency (activity: 41%).

Unidentified coagulation disorders in post-tonsillectomy hemorrhage by Remmert, Stephan / Ear, Nose and Throat Journal

From the origins of its business in 1949, BTG has commercialized major innovations such as Magnetic Resonance Imaging (MRI), recombinant factor IX blood-clotting protein, Campath(R) (alemtuzumab) and Multi Level Cell (MLC) memory.

BTG ANNOUNCES NOVEL INSULIN THERAPY FOR TREATMENT OF DIABETES by Worldwide Biotech

The implanted genes have so far functioned correctly, directing the production of factor IX for at least 5 months--a long time in the typical 2-year life span of a mouse.

New gene-therapy techniques show potential by Seppa, N. / Science News

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