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factor IX

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noun
  1. Christmas factor.

Christmas factor

noun Biochemistry.
  1. a blood constituent necessary for clotting, the absence of which is characterized by a hemophilialike condition.

Origin of Christmas factor

see origin at Christmas disease
Also called factor IX, plasma thromboplastic component.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
factor ix in Medicine

factor IX

n.
  1. A factor in the clotting of blood necessary for the formation of intrinsic blood thromboplastin; a deficiency of it causes hemophilia B.antihemophilic globulin B Christmas factor

Christmas factor

n.
  1. factor IX

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