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. 2023 Mar 14;168(4):111. doi: 10.1007/s00705-023-05738-1

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© The Author(s), under exclusive licence to Springer-Verlag GmbH Austria, part of Springer Nature 2023, Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

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Fig. 1 — Phylogenetic analysis based on HIV-1 NFLG sequences. A neighbor-joining tree was constructed using MEGA 6.0 with 1000 bootstrap replicates. The standard reference sequences of HIV-1 subtypes were downloaded from the HIV Database (http://www.hiv.lanl.gov/content/index). Bootstrap values ≥ 70% are indicated on the tree. The scale length indicates 5% nucleotide sequence divergence. Black dots indicate sequences from this study