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The numbers at the branches are confidence values based on Felsenstein’s bootstrap analysis (500 replicates) with MEGA version 4 [28]. HCV HCV-J, HCV Con1 and HCV H77 strains belong to HCV subgenotypes 1b, 1b and 1a, respectively. GenBank accession No: HCV-J, D90208.1; Con1, AJ238799.1; H77, AF009606.1.
