CercopithecusCercopithecus aethiopsGenes, vpuMonkey DiseasesErythrocebus patasCameroonSimian immunodeficiency virusCercopithecinaeHaplorhiniSimian T-lymphotropic virus 3CercocebusYaba monkey tumor virusDeltaretrovirus InfectionsSimian T-lymphotropic virus 1PhylogenySimian Acquired Immunodeficiency SyndromeAnimals, WildPan troglodytesGenes, envSpecies SpecificityMolecular Sequence Data