title: Biological functions of the complement system.
mesh_terms: D000818:Animals; D001424:Bacterial Infections / Q000097:blood; D003167:Complement Activation; D003165:Complement System Proteins / Q000276:immunology / Q000502:physiology*; D006801:Humans; D008214:Lymphocytes / Q000276:immunology; D010586:Phagocytes / Q000502:physiology; D010587:Phagocytosis
chemical_list: D003165:Complement System Proteins