Figure 1From: Phylogenetic analysis of HDV isolates from HBsAg positive patients in Karachi, PakistanHDV genotype characterization by RFLP of amplified R0 region for some strains of HDV isolated from serum of HDV patients. The SmaI digest produced bands of 179 and 250 bp indicating genotype I. The SmaI site is present in the immunogenic region corresponding to nucleotides base pair 1066–1073 of HDAg.Back to article page