title: Asthma due to inhaled chemical agents--piperazine dihydrochloride.
mesh_terms: D000328:Adult; D000397:Air Pollution; D001249:Asthma / Q000139:chemically induced* / Q000188:drug therapy / Q000276:immunology; D002617:Chemical Industry; D004205:Cromolyn Sodium / Q000627:therapeutic use; D004739:England; D004781:Environmental Exposure; D006801:Humans; D008297:Male; D009784:Occupational Diseases / Q000276:immunology*; D010879:Piperazines / Q000009:adverse effects*; D012129:Respiratory Function Tests; D012882:Skin Tests
chemical_list: D010879:Piperazines; D004205:Cromolyn Sodium