Fig 1. The biotinylated peptides used in this study; the peptides correspond to the 10 C-terminal amino acid residues from the E6 protein of each virus type.

The scrambled peptide has the same amino acid composition as the HPV-18 peptide. Group 1 HPV types are defined as definitely carcinogenic in humans; Group 2B as possibly carcinogenic in humans, and Group 3 as no risk (IARC Monograph 100B).