AlphaNine SD; Bebulin VH; BeneFix; Mononine; Profilnine SD; Proplex T; Recombinant 


Factor IX (or Christmas factor or Christmas-Eve factor) is one of the serine proteases (EC of the coagulation system; it belongs to peptidase family S1. Deficiency of this protein causes hemophilia B.

A rare, aggressive type of thyroid cancer in which the malignant (cancer) cells look very different from normal thyroid cells.