title: Component deficiencies. 9. The ninth component.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D003167:Complement Activation; D003186:Complement C9 / Q000172:deficiency* / Q000235:genetics; D005260:Female; D006801:Humans; D008297:Male
chemical_list: D003186:Complement C9