title: [Visna virus: isolation of a molecule of high molecular weight ribonucleic acid].
mesh_terms: D000818:Animals; D002499:Centrifugation, Density Gradient; D046508:Culture Techniques; D007668:Kidney; D008970:Molecular Weight; D012328:RNA Viruses / Q000032:analysis* / Q000302:isolation & purification; D012367:RNA, Viral; D012756:Sheep; D012757:Sheep Diseases / Q000382:microbiology*; D014316:Tritium; D014529:Uridine; D014776:Virus Cultivation
chemical_list: D012367:RNA, Viral; D014316:Tritium; D014529:Uridine
vernacular_title: Virus Visna: isolement d'une molécute d'acide ribonucléique de haut poids moléculaire.