title: Lymphosarcoma with virus-like particles in a neonatal foal.
mesh_terms: D000818:Animals; D006734:Horse Diseases / Q000382:microbiology*; D006736:Horses; D008198:Lymph Nodes / Q000382:microbiology; D008228:Lymphoma, Non-Hodgkin / Q000382:microbiology / Q000662:veterinary*; D012190:Retroviridae / Q000302:isolation & purification*