CercopithecusPapio anubisPapioPapio cynocephalusCercopithecinaeMonkey DiseasesPapio hamadryasOesophagostomumPapio ursinusCercopithecus aethiopsGenes, vpuPapio papioOleaHaplorhiniErythrocebus patasCameroonCercocebusSimian T-lymphotropic virus 1TheropithecusDeltaretrovirus InfectionsSimian immunodeficiency virusSimian T-lymphotropic virus 3PhylogenyYaba monkey tumor virusAnimals, WildSpecies SpecificitySimian Acquired Immunodeficiency SyndromePlant OilsPan troglodytesMolecular Sequence DataGenes, envBase SequenceOlivary NucleusSequence Analysis, DNA