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. 2016 Oct 7;13:167. doi: 10.1186/s12985-016-0629-9

Fig. 1.

Fig. 1

Maximum-likelihood trees of HPV-33 variants. Note: Phylogenetic trees based on the Maximum-likelihood method of representing the relationships between variants of HPV-33, (a) Tree based on gene L1, (b) Tree based on gene L2. Sub-lineage classification based on full genomes from a reported research [27], and one or two representative sequences were chosen from each branch of the tree, respectively (AS099-A1/HQ537697, INCC0137-A2/HQ537699, QV34060-A2/HQ537698, QV23819-B/HQ537705, QV34189-B/HQ537707). Numbers above the branches indicate the bootstrap values that are greater than 70 %