CercopithecusGenes, vpuCercopithecus aethiopsMonkey DiseasesErythrocebus patasCameroonSimian immunodeficiency virusCercopithecinaeHaplorhiniSimian T-lymphotropic virus 3CercocebusYaba monkey tumor virusDeltaretrovirus InfectionsSimian T-lymphotropic virus 1PhylogenySimian Acquired Immunodeficiency Syndrome