title: Antigenic drift of equine infectious anemia virus in chronically infected horses.
mesh_terms: D000818:Animals; D000918:Antibody Specificity; D002999:Clone Cells; D003168:Complement Fixation Tests; D003429:Cross Reactions; D000939:Epitopes; D004859:Equine Infectious Anemia / Q000097:blood / Q000276:immunology*; D006736:Horses; D005779:Immunodiffusion; D004860:Infectious Anemia Virus, Equine / Q000302:isolation & purification / Q000472:pathogenicity; D007962:Leukocytes; D009500:Neutralization Tests; D011233:Precipitin Tests; D013997:Time Factors
chemical_list: D000939:Epitopes