SIVAGMSimian Immunodeficiency Virus from African Green Monkeys
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In each case, phylogenetic analyses indicated that the viruses were closely related to SIVAGM from the local species of African green monkey, namely, vervet monkeys in East Africa and sabaeus monkeys in West Africa [ILLUSTRATION FOR FIGURE 1 OMITTED].
AGM] found in sabaeus monkeys appears to be the result of a relatively ancient recombination event between SIVAGM and [SIV.
This probably indicates that, within this part of the vital phylogeny, evolution has been host-dependent, and therefore that an ancestral SIVAGM was present in the common ancestor of the African green monkeys, which may have existed more than a million years ago.