title: Recurrent bacterial infections associated with C3 nephritic factor and hypocomplementemia.
mesh_terms: D001424:Bacterial Infections / Q000276:immunology*; D003176:Complement C3 / Q000172:deficiency* / Q000378:metabolism; D003178:Complement C3 Nephritic Factor / Q000032:analysis*; D003169:Complement Inactivator Proteins / Q000032:analysis*; D003170:Complement Pathway, Alternative; D006801:Humans; D008297:Male; D008585:Meningitis, Meningococcal / Q000276:immunology; D008875:Middle Aged; D011014:Pneumonia / Q000276:immunology; D012008:Recurrence
chemical_list: D003176:Complement C3; D003178:Complement C3 Nephritic Factor; D003169:Complement Inactivator Proteins