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  Indian J Med Microbiol
 

Figure 1: Phylogenetic tree of representative HBV strains: S gene sequence of 5 Saudi and 30 international HBV strains was aligned using Megalign program of Lasergene software (DNASTAR) and tree was constructed via the neighborhood-joining method of MEGA 5.1 program. Confidence of the tree was verified by bootstrapping for 1000 times and only percentages above 50% were denoted at the branch nodes. Genotypes and subgenotypes are indicated at the right side of the tree. HBV strains were classified into 8 genotypes A–H, whereas genotype D in further divided into 5 subgenotypes D1–D5. All viral strains in Saudi Arabia are categorized within genotype D in both subgenotypes D1 and D3

Figure 1: Phylogenetic tree of representative HBV strains: S gene sequence of 5 Saudi and 30 international HBV strains was aligned using Megalign program of Lasergene software (DNASTAR) and tree was constructed via the neighborhood-joining method of MEGA 5.1 program. Confidence of the tree was verified by bootstrapping for 1000 times and only percentages above 50% were denoted at the branch nodes. Genotypes and subgenotypes are indicated at the right side of the tree. HBV strains were classified into 8 genotypes A–H, whereas genotype D in further divided into 5 subgenotypes D1–D5. All viral strains in Saudi Arabia are categorized within genotype D in both subgenotypes D1 and D3