title: Observations on production, assay and purification of chick embryo interferon.
mesh_terms: D000818:Animals; D001681:Biological Assay; D002642:Chick Embryo; D066298:In Vitro Techniques; D007372:Interferons / Q000096:biosynthesis*; D009109:Mumps virus; D009522:Newcastle disease virus; D009975:Orthomyxoviridae; D010222:Parainfluenza Virus 1, Human; D014721:Vesicular stomatitis Indiana virus
chemical_list: D007372:Interferons