Congo red and trypan blue as stains for plaque assay of newcastle disease virus.
D000818:Animals; D002642:Chick Embryo; D003224:Congo Red; D003470:Culture Media; D009522:Newcastle disease virus / Q000254:growth & development*; D014343:Trypan Blue; D014776:Virus Cultivation
D003470:Culture Media; D003224:Congo Red; D014343:Trypan Blue