title: Letter: Cross-sensitivity and cephalosporin.
mesh_terms: D002512:Cephalothin / Q000276:immunology*; D003429:Cross Reactions; D004342:Drug Hypersensitivity / Q000276:immunology*; D006801:Humans; D010406:Penicillins / Q000276:immunology*
chemical_list: D010406:Penicillins; D002512:Cephalothin