title: HLA-A, -B, -C and -DR antigens and positive patch test reactions.
mesh_terms: D003035:Cobalt / Q000009:adverse effects; D003877:Dermatitis, Contact / Q000276:immunology*; D006680:HLA Antigens / Q000032:analysis*; D006801:Humans; D010328:Patch Tests
chemical_list: D006680:HLA Antigens; D003035:Cobalt