title: Homozygous deficiency of C3 in a patient with repeated infections.
mesh_terms: D000208:Acute Disease; D000293:Adolescent; D001424:Bacterial Infections / Q000209:etiology*; D002633:Chemotaxis; D003165:Complement System Proteins / Q000032:analysis*; D005260:Female; D006720:Homozygote; D006801:Humans; D007153:Immunologic Deficiency Syndromes / Q000150:complications / Q000235:genetics*; D007169:Impetigo / Q000209:etiology; D008585:Meningitis, Meningococcal / Q000209:etiology; D010033:Otitis Media / Q000209:etiology; D010304:Paronychia / Q000209:etiology; D011018:Pneumonia, Pneumococcal / Q000209:etiology; D012008:Recurrence; D013183:Sputum / Q000382:microbiology
chemical_list: D003165:Complement System Proteins