Factor XI |
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| Blood Coagulation Factor XI; Antecedent, Plasma Thromboplastin; Factor XI, Coagulation; Thromboplastin Antecedent, Plasma; XI, Coagulation Factor | |
| Stable blood coagulation factor involved in the intrinsic pathway. The activated form XIa activates factor IX to IXa. Deficiency of factor XI is often called hemophilia C. | |