title: Immunoglobulin-A, HLA-B27, and frozen shoulder.
mesh_terms: D006680:HLA Antigens / Q000276:immunology*; D006801:Humans; D007070:Immunoglobulin A / Q000032:analysis*; D012785:Shoulder Joint; D052256:Tendinopathy / Q000276:immunology*
chemical_list: D006680:HLA Antigens; D007070:Immunoglobulin A