Regarding the most recent common ancestor of HIV-1 Group M.
Parris
George E
GE
D000163:Acquired Immunodeficiency Syndrome / Q000453:epidemiology* / Q000635:transmission / Q000821:virology*; D000349:Africa / Q000453:epidemiology; D000818:Animals; D016001:Confidence Intervals; D016384:Consensus Sequence; D004196:Disease Outbreaks; D005060:Europe / Q000453:epidemiology; D019143:Evolution, Molecular; D015752:Genes, env; D019302:HIV Envelope Protein gp160 / Q000235:genetics; D015497:HIV-1 / Q000145:classification / Q000235:genetics*; D006205:Haiti / Q000453:epidemiology; D006801:Humans; D016013:Likelihood Functions; D002679:Pan troglodytes; D010802:Phylogeny; D016097:Simian Acquired Immunodeficiency Syndrome / Q000635:transmission / Q000821:virology; D015302:Simian Immunodeficiency Virus / Q000235:genetics; D013997:Time Factors; D014481:United States / Q000453:epidemiology; D015047:Zoonoses
D019302:HIV Envelope Protein gp160