title: H2-receptors in exercise-induced asthma.
mesh_terms: D000328:Adult; D001249:Asthma / Q000503:physiopathology*; D001250:Asthma, Exercise-Induced / Q000503:physiopathology*; D002927:Cimetidine / Q000627:therapeutic use; D002986:Clinical Trials as Topic; D006801:Humans; D008297:Male; D011897:Random Allocation; D011968:Receptors, Histamine / Q000502:physiology*; D011970:Receptors, Histamine H2 / Q000502:physiology*
chemical_list: D011968:Receptors, Histamine; D011970:Receptors, Histamine H2; D002927:Cimetidine