title: Genomic changes associated with antigenic variation of visna virus. II. Common nucleotide sequence changes detected in variants from independent isolations.
mesh_terms: D000818:Animals; D000956:Antigens, Viral / Q000235:genetics*; D001483:Base Sequence; D002845:Chromatography; D000939:Epitopes / Q000235:genetics*; D005814:Genes, Viral; D014644:Genetic Variation; D009841:Oligonucleotides / Q000032:analysis; D012367:RNA, Viral; D012260:Ribonucleases; D012265:Ribonucleotides / Q000032:analysis; D012756:Sheep; D014790:Visna-maedi virus / Q000032:analysis / Q000235:genetics* / Q000276:immunology
chemical_list: D000956:Antigens, Viral; D000939:Epitopes; D009841:Oligonucleotides; D012367:RNA, Viral; D012265:Ribonucleotides; D012260:Ribonucleases