title: Epidemiology of feline leukemia (lymphosarcoma).
mesh_terms: D000367:Age Factors; D000818:Animals; D002140:California; D002371:Cat Diseases / Q000453:epidemiology*; D002415:Cats; D005779:Immunodiffusion; D005256:Leukemia Virus, Feline / Q000302:isolation & purification; D008198:Lymph Nodes / Q000473:pathology; D008228:Lymphoma, Non-Hodgkin / Q000382:microbiology / Q000662:veterinary*; D009515:New Jersey; D009518:New York; D010414:Pennsylvania; D012190:Retroviridae / Q000302:isolation & purification; D013045:Species Specificity