title: Rapid diagnosis by electron microscopy of avian coronavirus infection.
abstract: The election microscopic examination of allantoic fluid from embryonated hens' eggs inoculated with tissue homogenates from organs of birds suffering with infectious bronchitis, reveals the presence of coronaviruses as early as the first or the second passage. This method permits a rapid diagnosis and is as accurate as the standard technique.
mesh_terms: D000818:Animals; D001991:Bronchitis / Q000662:veterinary*; D002642:Chick Embryo; D005321:Extraembryonic Membranes; D008722:Methods; D008854:Microscopy, Electron; D011201:Poultry Diseases / Q000175:diagnosis*; D012328:RNA Viruses; D014777:Virus Diseases / Q000662:veterinary