Phylogenetic analysis of the S genes of HBV isolates ascribed to genotype E. The same region used to create the phylogenetic tree depicted in Fig. 1 was analyzed from the isolates from patients S2 and S1, as well as from 39 sequences ascribed to genotype E deposited in GenBank. The GenBank accession numbers are as follows: E1 to E15, the sequences correspond to the same accession numbers provided in the legend to Fig. 1; E16, AB091257; E17, AB091262; E18, AB091266; E19, AB091258, E20, AB091260; E21, AB091259; E22, AB091264; E23, AF323631; E24, AF323617; E25, AF323619, E26, AF323629; E27, AF323636; E28, AF323633; E29, AF323618; E30, AF323625; E31, AF323620; E32, AF323623; E33, AF323632; E34, AF323630; E35, AF323628; E36, AF323624; E37, AF323622; E38, AB032431; E39, AF323635. The bootstrap value is indicated for the branch corresponding to the isolates from patients S2 and S1. Bar, number of nucleotide substitutions per site.