title: Tryptic peptide mapping identifies structural heterogeneity among six variants of HLA-B27.
mesh_terms: D002851:Chromatography, High Pressure Liquid; D005796:Genes; D014644:Genetic Variation; D006680:HLA Antigens / Q000032:analysis / Q000235:genetics*; D015796:HLA-B27 Antigen; D006801:Humans; D010455:Peptides / Q000032:analysis; D014357:Trypsin
chemical_list: D006680:HLA Antigens; D015796:HLA-B27 Antigen; D010455:Peptides; D014357:Trypsin