factor IX

noun \ -ˈnīn \

Definition of factor IX

:a clotting factor that activates factor VIII and whose deficiency is associated with hemophilia called also Christmas factor

First Known Use of factor ix

1955


Medical Dictionary

factor IX

noun \ -ˈnīn \

medical Definition of factor IX

:a clotting factor that activates factor VIII and whose absence is associated with hemophilia B called also autoprothrombin II, Christmas factor

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