FIG.4.

Nucleotide alignments over a sequence spanning nt 1701 to 2500. They cover the putative breakpoints of recombination events in three isolates (each) representative of genotypes C (accession no. AB014378, D23684, and D50520), Ba (HBV-Chi89, HBV-HK11, and HBV-Tw25), and Bj (HBV-HUS, HBV-Ry34, and HBV-Shin). The 5′-terminal breakpoints of recombination events (within nt 1740 to 1838) are flanked by open triangles, and the 3′-terminal breakpoints (within nt 2443 to 2485) are flanked by solid triangles. The positions of various genes and elements, as well as the start of pregenomic mRNA, are indicated above the sequence.