title: Isolation of the nucleic acid of mouse mammary tumor virus (MTV).
mesh_terms: D000818:Animals; D002499:Centrifugation, Density Gradient; D005779:Immunodiffusion; D008324:Mammary Tumor Virus, Mouse / Q000032:analysis* / Q000276:immunology; D012367:RNA, Viral / Q000032:analysis*
chemical_list: D012367:RNA, Viral