A factor capable of enhancing interferon synthesis.
D000818:Animals; D001103:Arboviruses / Q000187:drug effects; D001681:Biological Assay; D002642:Chick Embryo; D003470:Culture Media; D046508:Culture Techniques; D007372:Interferons / Q000032:analysis / Q000096:biosynthesis* / Q000494:pharmacology; D009522:Newcastle disease virus / Q000528:radiation effects; D014466:Ultraviolet Rays
D003470:Culture Media; D007372:Interferons