title: Isolation of a virus from cattle with persistent lymphocytosis.
mesh_terms: D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000097:blood / Q000382:microbiology* / Q000473:pathology; D002478:Cells, Cultured; D005374:Filtration; D005455:Fluorescent Antibody Technique; D005779:Immunodiffusion; D007958:Leukocyte Count; D008218:Lymphocytosis / Q000097:blood / Q000382:microbiology* / Q000473:pathology / Q000662:veterinary; D012328:RNA Viruses / Q000302:isolation & purification*; D013154:Spleen / Q000166:cytology