title: Demonstration of low-pathogenicity laryngotracheitis virus in a chicken flock affected by Newcastle disease.
mesh_terms: D000818:Animals; D002645:Chickens; D006566:Herpesviridae Infections / Q000150:complications / Q000662:veterinary*; D001352:Herpesvirus 1, Gallid / Q000472:pathogenicity; D009521:Newcastle Disease / Q000150:complications*; D011201:Poultry Diseases; D014774:Virulence