_:vb50950629 . _:vb50950629 "url:https://rarediseases.org/rare-diseases/factor-x-deficiency/"^^ . _:vb50950629 . _:vb50950629 . _:vb50950629 . _:vb50950629 "A blood coagulation disease that is characterized by the partial or complete absence of factor X activity in the blood."^^ .