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Phylogenetic trees of HIV-1 sequences from samples from Novosibirsk. (a) Tree of the protease-reverse transcriptase (PR-RT) sequences. (b) Tree of env V3 region sequences. (c) Tree of CRF63_02A1 near full-length genome sequences. Samples from the current study are in bold type. Only bootstrap values ≥70% are shown. In references of subtype A, CRF02_AG, and CRF63_02A1, the country of sample collection is indicated by the ISO two-letter code.
