FIG. 2.

Phylogenetic tree constructed by the neighbor-joining method based on the partial nucleotide sequence (522 to 526 nt) of 51 HDV isolates. In addition to the 20 Mongolian isolates obtained in the present study, which are indicated in boldface type, 31 reported HDV isolates of genotypes I to III whose entire sequence is known were included for comparison. The reported isolates are indicated with the accession number followed by the name of the country of isolation, when available. Bootstrap values are indicated for the major nodes as a percentage of the data obtained from 1,000 resamplings.