title: C3 activator in agammaglobulinemia.
abstract: C3 activator in sera of patients with agammaglobulinemia shows higher levels compared with age-matched healthy controls. This fact may be due to a compensatory function of the alternative pathway of the complement system to make up for the defect of production of antibody in these patients.
mesh_terms: D000361:Agammaglobulinemia / Q000150:complications / Q000276:immunology*; D000917:Antibody Formation; D001424:Bacterial Infections / Q000150:complications; D002097:C-Reactive Protein; D003176:Complement C3; D006801:Humans; D000515:alpha 1-Antitrypsin
chemical_list: D003176:Complement C3; D000515:alpha 1-Antitrypsin; D002097:C-Reactive Protein