title: Organic nitrates: tolerance at the level of the vascular smooth muscle.
mesh_terms: D000818:Animals; D001011:Aorta; D001808:Blood Vessels / Q000187:drug effects*; D066298:In Vitro Techniques; D009130:Muscle, Smooth / Q000187:drug effects*; D009566:Nitrates / Q000494:pharmacology; D005996:Nitroglycerin / Q000008:administration & dosage / Q000494:pharmacology*; D010208:Papaverine / Q000494:pharmacology; D011335:Proadifen / Q000494:pharmacology; D051381:Rats
chemical_list: D009566:Nitrates; D011335:Proadifen; D010208:Papaverine; D005996:Nitroglycerin