title: On visna virus: purification and nucleic acid content.
mesh_terms: D000085:Acetates; D000596:Amino Acids / Q000378:metabolism; D000818:Animals; D002247:Carbon Isotopes; D002499:Centrifugation, Density Gradient; D011232:Chemical Precipitation; D002831:Choroid Plexus; D046508:Culture Techniques; D003588:Cytopathogenic Effect, Viral; D003956:Dialysis; D008722:Methods; D011328:Prions / Q000032:analysis* / Q000302:isolation & purification* / Q000472:pathogenicity; D012367:RNA, Viral / Q000032:analysis*; D012756:Sheep; D013395:Sucrose; D013936:Thymidine / Q000378:metabolism; D014316:Tritium; D014529:Uridine / Q000378:metabolism; D015032:Zinc
chemical_list: D000085:Acetates; D000596:Amino Acids; D002247:Carbon Isotopes; D011328:Prions; D012367:RNA, Viral; D014316:Tritium; D013395:Sucrose; D015032:Zinc; D013936:Thymidine; D014529:Uridine