title: Circulating factor IX antigen-inhibitor complexes in hemophilia B- following infusion of a factor IX concentrate.
mesh_terms: D000293:Adolescent; D000936:Antigen-Antibody Complex; D002648:Child; D005164:Factor IX / Q000008:administration & dosage / Q000037:antagonists & inhibitors* / Q000276:immunology; D006467:Hemophilia A / Q000097:blood; D006801:Humans; D008297:Male; D008875:Middle Aged
chemical_list: D000936:Antigen-Antibody Complex; D005164:Factor IX