. "An absence or reduced level of blood coagulation factor XII. It normally occurs in the absence of patient or family history of hemorrhagic disorders and is marked by prolonged clotting time.MSH2003_2003_05_12" . "Factor_XII_Deficiency"^^ . . "C26770"^^ . . "Disease or Syndrome"^^ . "Hereditary Factor XII DeficiencyPTNCI" . . "Hereditary Hageman Factor DeficiencySYNCI" . "C0272334"^^ . "Hereditary Factor XII Deficiency DiseasePTNICHD" . "NICHD"^^ . "Hereditary Factor XII Deficiency"^^ . "A rare autosomal recessive inherited bleeding disorder caused by deficiency of coagulation factor XII. It may be asymptomatic or manifest with bleeding.NCI" . . "Hereditary Factor XII Deficiency"^^ . .