title: A study of the role of allergy in trachoma. (A double blind field trial using a potent topical anti allergic).
mesh_terms: D002648:Child; D002986:Clinical Trials as Topic; D003228:Conjunctiva / Q000166:cytology / Q000382:microbiology; D004205:Cromolyn Sodium / Q000627:therapeutic use*; D004311:Double-Blind Method; D006801:Humans; D014141:Trachoma / Q000188:drug therapy* / Q000276:immunology / Q000382:microbiology
chemical_list: D004205:Cromolyn Sodium