Figure 2From: Detection of hepatitis B virus DNA among accepted blood donors in Nanjing, ChinaPhylogenetic analysis of S region of HBV. Phylogenetic tree of the partial S gene sequences (185 bp) from five donors with occult HBV infection in this study and sequences recovered from GenBank. Sequences retrieved from GenBank are denoted by their accession numbers and genotype. *, S gene sequences obtained in this study.Back to article page