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antihemophilic factor
(ănˌtē-hēˌmə-fĭlˈĭk, ănˌtī-)
noun Abbr. AHF A protein substance in blood plasma that participates in and is essential for the blood-clotting process. Most cases of hemophilia are caused by a deficiency of this factor. Also called antihemophilic globulin, factor VIII.
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