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| Factor IXa Coagulation Factor IXa | Factor IX, Activated | Blood Coagulation Factor IX, Activated | Activated Factor IX | Factor IXa, Coagulation | IXa, Coagulation Factor Activated form of factor IX. This activation can take place via the intrinsic pathway by the action of factor XIa and calcium, or via the extrinsic pathway by the action of factor VIIa, thromboplastin, and calcium. Factor IXa serves to activate factor X to Xa by cleaving the arginyl-leucine peptide bond in factor X. |