title: Role of reference reagents in virus research.
mesh_terms: D000818:Animals; D000941:Antigens; D002415:Cats; D002417:Cattle; D004285:Dogs; D000882:Haplorhini; D007106:Immune Sera; D007202:Indicators and Reagents; D008396:Maryland; D051379:Mice; D009316:National Institutes of Health (U.S.); D014481:United States; D014780:Viruses / Q000145:classification*
chemical_list: D000941:Antigens; D007106:Immune Sera; D007202:Indicators and Reagents