Antigenic analysis and vaccines.
D000818:Animals; D000941:Antigens / Q000032:analysis*; D002642:Chick Embryo; D006801:Humans; D051379:Mice; D009345:Neisseria meningitidis / Q000032:analysis / Q000276:immunology*; D011817:Rabbits; D014765:Viral Vaccines; D014774:Virulence
D000941:Antigens; D014765:Viral Vaccines