title: Virus-inhibiting factor or interferon activity on heterologous animal cells.
mesh_terms: D000818:Animals; D002460:Cell Line; D002642:Chick Embryo; D006224:Cricetinae; D006367:HeLa Cells; D006801:Humans; D007372:Interferons / Q000502:physiology*; D007739:L Cells; D008297:Male; D051379:Mice; D009522:Newcastle disease virus; D011817:Rabbits
chemical_list: D007372:Interferons