Journal of General Virology |

Fig. 1. Schematic representation of the HBV genome showing four main classes of transcript (arrows), the longest of which corresponds to pregenomic RNA (brown). Variations in 5´ end positions for the 2.1 and 3.5 kb size classes are shown with blue and red dots, respectively. Coloured boxes represent protein-coding regions. DR1 and DR2 are 11 bp repeat sequences with template functions during replication.
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