title: Changes in the patency of the dog's eustachian tube induced by histamine and antihistamines.
mesh_terms: D000818:Animals; D001794:Blood Pressure / Q000187:drug effects; D002744:Chlorpheniramine / Q000008:administration & dosage / Q000494:pharmacology; D004285:Dogs; D005064:Eustachian Tube / Q000187:drug effects*; D006632:Histamine / Q000494:pharmacology*; D006634:Histamine H1 Antagonists / Q000008:administration & dosage / Q000494:pharmacology*; D011398:Promethazine / Q000008:administration & dosage / Q000494:pharmacology; D011725:Pyridines / Q000494:pharmacology
chemical_list: D006634:Histamine H1 Antagonists; D011725:Pyridines; D002744:Chlorpheniramine; D006632:Histamine; D011398:Promethazine