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Copyright ©2007 Baishideng Publishing Group Co.
World J Gastroenterol. Jan 7, 2007; 13(1): 14-21
Published online Jan 7, 2007. doi: 10.3748/wjg.v13.i1.14
Figure 1
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Figure 1 Phylogenetic tree of orthohe-padnaviruses. Complete genomes of HBV genotypes A (X02763), B (D00330), C (M12906), D (V01460), E (X75657), F (X69798), G (AF160501) and H (AY090454); HBVcpz (D00220), HBVoru (NC 002168), and HBVgbn (U46935) were aligned using clustal w with orthohepadnavirus genomes from woolly monkey (AF046996) woodchuck (J02442), ground squirrel (K02715) and the tentative member from arctic squirrel (nc_001719). The alignment was tested with the neighbour-joining method.
Figure 2
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Figure 2 Phylogenetic tree of the genus avihepadnavirus.
Figure 3
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Figure 3 Phylogenetic tree of complete HBV genomes. An alignment of 601 complete HBV sequences was performed with Clustal X in the program DNAstar. The alignment was further analysed by boot-strapping using the Neighbourhood-Joining method contained in MEGA version 3.1[104].
Figure 4
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Figure 4 Geographic distribution of HBV genotypes and subgenotypes.
Figure 5
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Figure 5 Schematic genome organisation of recombinants between HBV genotypes. HBV recombinants were described from materials sampled in A: Vietnam[99]; B: Tibet[68]; C: Africa[100] and D: Asia[67]. The ORF coding for the HBV proteins are shown as arrows, the inner circle represents the HBV genome.