title: Pleliminary observations on possible synergism between infectious laryngotracheitis virus and hemophilus gallinarum.
mesh_terms: D000818:Animals; D006190:Haemophilus / Q000302:isolation & purification*; D006564:Herpesviridae / Q000302:isolation & purification*; D006566:Herpesviridae Infections; D007181:Inclusion Bodies, Viral; D012141:Respiratory Tract Infections / Q000662:veterinary*