title: Humoral factors in bronchoconstriction.
mesh_terms: D000707:Anaphylaxis / Q000503:physiopathology; D000818:Animals; D001920:Bradykinin / Q000494:pharmacology; D001986:Bronchial Spasm / Q000503:physiopathology*; D002395:Catecholamines / Q000502:physiology; D002415:Cats; D004285:Dogs; D004336:Drug Antagonism; D004837:Epinephrine / Q000494:pharmacology; D006168:Guinea Pigs; D006632:Histamine / Q000502:physiology; D006801:Humans; D018377:Neurotransmitter Agents / Q000502:physiology*; D011817:Rabbits
chemical_list: D002395:Catecholamines; D018377:Neurotransmitter Agents; D006632:Histamine; D001920:Bradykinin; D004837:Epinephrine