Fig. 3From: A considerable proportion of CRF01_AE strains in China originated from circulating intrasubtype recombinant forms (CIRF)Details of the 4 clusters revealed from the phylogenetic tree of NFLG HIV-1 CRF01_AE strains from China. The trees were constructed using PhyML. SH values of all relevant nodes are indicated. SH support values of ≥90 % were here considered significant. Sequences showing significant evidence (recombinants) are labeled with red dotsBack to article page