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. 2014 Jan 15;9(1):e83337. doi: 10.1371/journal.pone.0083337

Figure 5. Emergence of CRF50_A1D.

Figure 5

Time-scaled analysis of CRF50_A1D pol gene sequences using BEAST. Green sequences indicate the closest NCBI BLAST matches to the CRF50 sequences (all subtype A1); red sequences indicate A1 reference sequences; purple sequences indicate subtype D reference sequences. Outgroup subtype C sequences are shown in blue. Node values indicate the posterior probability of each node. The five full-length genomes labeled in turquoise. The emergence of CRF50_A1D in Britain is dated to 1992.