title: Interferon formation in chick embryos infected with one or two viruses.
mesh_terms: D000818:Animals; D002642:Chick Embryo; D046508:Culture Techniques; D003588:Cytopathogenic Effect, Viral; D006386:Hemagglutination Tests; D006564:Herpesviridae; D007372:Interferons / Q000096:biosynthesis*; D009522:Newcastle disease virus; D014713:Viruses, Unclassified
chemical_list: D007372:Interferons