title: Long-term treatment with H2-receptor antagonists.
mesh_terms: D000956:Antigens, Viral; D001666:Binding Sites, Antibody; D002250:Carbon Radioisotopes; D006801:Humans; D007158:Immunologic Techniques; D007553:Isotope Labeling; D008459:Measles virus / Q000276:immunology; D009103:Multiple Sclerosis / Q000276:immunology*; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D000956:Antigens, Viral; D002250:Carbon Radioisotopes