title: The search for an infectious agent: approaches explored for multiple sclerosis.
mesh_terms: D000818:Animals; D000914:Antibodies, Viral / Q000032:analysis; D001921:Brain / Q000276:immunology; D003588:Cytopathogenic Effect, Viral; D004195:Disease Models, Animal; D006680:HLA Antigens / Q000032:analysis; D006801:Humans; D007958:Leukocyte Count; D008457:Measles / Q000150:complications; D051379:Mice; D009103:Multiple Sclerosis / Q000276:immunology / Q000382:microbiology*; D009504:Neutrophils / Q000276:immunology; D012756:Sheep; D012897:Slow Virus Diseases / Q000150:complications / Q000382:microbiology
chemical_list: D000914:Antibodies, Viral; D006680:HLA Antigens