略語大辞典 [Med] 15 PTC plasma thromboplastin component 血漿トロンボプラスチン成分. 第IX血液凝固因子. クリスマス因子.plasma thromboplastin component; or (blood coagulation) factor IX; or Christmas factor; [Med]. 丸善「略語大辞典」JLogosID : 11856809