Figure 1From: Variability and conservation in hepatitis B virus core proteinSequence variation along the HBVc sequence. a) The number of polymorphisms (variants occurring in more than 1 % sequences examined) found at each position of the HBVc sequence. See additional file 1 for full data. b) Major features of secondary structure along HBVc [13]. Blue : α-helix Green : Proline rich loop; Red : C-terminal arm.Back to article page