Prevalence of Human Papillomavirus Variants and Genetic Diversity in the L1 Gene and Long Control Region of HPV16, HPV31, and HPV58 Found in North-East Brazil

Figure 3

Neighbor joining phylogenetic tree of HPV31 variants based on 783 pb of LCR. Reference sequences are listed in Table 2. Three clusters were identified as lineages A, B, and C. Viral lineages analyzed in this study (KJ435060-KJ435067) are clustered into A and C branches. Only bootstrap values above 50% are represented in the branches.