Fig. 4From: Prevalence and distribution of human papillomavirus (HPV) in Luoyang city of Henan province during 2015–2021 and the genetic variability of HPV16 and 52Neighbor joining phylogenetic tree generated using nucleotide sequences of the HPV16 L1 gene. Legend: Study sequences are labeled in dots, others without dots are reference strain, including: A1 (K02178), A2 (AF536179), A3 (HQ644236), A4 (AF534061 and LC368960), B1 (AF536180), B2 (HQ644298), C (AF472509), D1 (HQ644257), D2 (AY686579), D3 (AF402678). Phylogenetic trees were constructed by the Neighbor-Joining method and the Kimura 2-parameter model by MEGA 6.0 package. Only bootstrap values above 50% are displayed in the branchesBack to article page