title: Infectivity of visna virus DNA.
mesh_terms: D000818:Animals; D001483:Base Sequence; D002118:Calcium / Q000494:pharmacology; D002831:Choroid Plexus; D046508:Culture Techniques; D003588:Cytopathogenic Effect, Viral; D004279:DNA, Viral / Q000032:analysis / Q000378:metabolism; D007106:Immune Sera / Q000494:pharmacology; D011402:Pronase / Q000494:pharmacology; D012328:RNA Viruses / Q000472:pathogenicity*; D012367:RNA, Viral / Q000032:analysis; D012756:Sheep; D014158:Transcription, Genetic; D014790:Visna-maedi virus / Q000032:analysis / Q000378:metabolism / Q000472:pathogenicity*
chemical_list: D004279:DNA, Viral; D007106:Immune Sera; D012367:RNA, Viral; D011402:Pronase; D002118:Calcium