Figure 4个  Table 2
    • Primers Sequences (5′-3′) Primers Sequences (5′-3′)
      B∆V1-F AAGGGCGAGATCAAGAACTGCAGCT B'∆V1-F GATATGAAAAACTGCTCTTTCAATCTC
      B∆V1-R GCACTTCAGGCTCACGCACAGGGG B'∆V1-R AGTGCAATTTAAAGTAACACAGAGTGG
      B1GS-F CGGCAGCAAGGGCGAGATCAAGAACTGCAGCT 01_AE∆V1-F GAAGTAAGAAACTGTTCTTTTAATGTG
      B1GS-R CCGCCACCGCACTTCAGGCTCACGCACAGGGG 01_AE∆V1-R GGAACAATTTAAAGTAACACAGAGAGG
      B2GS-F GGCGGTGGCGGCTCTAAGGGCGAGATCAAGAACTGCAGCT 07_BC∆V1-F GAAATGAAAAATTGCTCTTTCAATACA
      B2GS-R GCTGCCGCCGCCACCGCACTTCAGGCTCACGCACAGGGG 07_BC∆V1-R ACATTCTAAAGTGACACAGAGTGGGGT
      B3GS-F GGCGGTGGCGGCTCTCGGCAGCAAGGGCGAGATCAAGAAC 08_BC∆V1-F GGAGTAAAAAATTGCTCTTTCAATGCA
      B3GS-R GCTGCCGCCGCCACCCCGCCACCGCACTTCAGGCTCACGC 08_BC∆V1-R ACAGTTTAAAGTGACACAGAGTGGGGT
      B4GS-F GGCGGTGGCGGCTCTGGCGGTGGCGGCTCTAAGGGCGAGA -- --
      B4GS-R GCTGCCGCCGCCACCGCTGCCGCCGCCACCGCACTTCAGG -- --
      B5GS-F GCGGCAGCGGTGGCGGCGGCAGCGGCGGTGGCGGCTCTGGCGGT -- --
      B5GS-R CGCCACCGCACTTCAGGCTCACGCACAGGGGGGTCAGCTTCACG -- --
      B6GS-F GGCGGTGGCGGCTCTCGGCAGCAAGGGCGAGATCAAGAAC -- --
      B6GS-R GCTGCCGCCGCCACCCCGCCACCGCACTTCAGGCTCACGC -- --
      B7GS-F GGCGGTGGCGGCTCTGGCGGTGGCGGCTCTAAGGGCGAGA -- --
      B7GS-R GCTGCCGCCGCCACCGCTGCCGCCGCCACCGCACTTCAGG -- --

      Table 1.  Sequences of primers used in this study

    • SIV/HIV-1 SIV/HIV-2 HIV subtypes (group)
      Historical Contemporary
      SIVs (49) SIVsmm (33) B 52 180
      SIVgsn/mon/mus (8) SIVmac (27) C 43 422
      SIVcpz(28) HIV-2 (30) D 10 15
      HIV-1 (62)* G 11 26
      01_AE 50 143
      02_AG 13 22
      O 10 8
      Note: *For HIV-1, we choose all the representative sequences from each subtype (group) for the analysis. Historical and contemporary sequences were sequences having 15-20-year sampling time intervals and excluded subtypes that did not have a sufficient number of sequences according to our criteria in the methods.

      Table S1.  Env sequences used in this study