单词 | Christmas disease |
释义 | Christmas disease (extremely rare) n WORD FAMILY Christmas disease n a clotting disorder similar to hemophilia A but caused by a congenital deficiency of factor IX Syn|Hyper haemophilia B, hemophilia B bleeder's disease, haemophilia, hemophilia congenital tendency to uncontrolled bleeding; usually affects males and is transmitted from mother to son |
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