Primary and secondary anchor positions for 19 HLA and H-2 class I alleles defined using positional scanning combinatorial peptide library matrices. Maps of primary and secondary anchor positions as defined using the combinatorial library data. Primary anchors (blue shading) were identified using specificity factors (SF), as secondary anchor positions (green shading) were determined on the basis of standard deviation (SD), as described in the text.
Sidney et al. Immunome Research 2008 4:2 doi:10.1186/1745-7580-4-2