Complement, viruses, and virus-infected cells.
D000914:Antibodies, Viral / Q000276:immunology; D003167:Complement Activation; D003165:Complement System Proteins / Q000502:physiology*; D006801:Humans; D014777:Virus Diseases / Q000276:immunology*; D014780:Viruses / Q000276:immunology*
D000914:Antibodies, Viral; D003165:Complement System Proteins