title: Effects of di, 1-, and d-ephe-drine on levarterenol tachyphylaxis in the isolated heart of Venus mercenaria.
mesh_terms: D000818:Animals; D004809:Ephedrine / Q000494:pharmacology*; D006321:Heart / Q000494:pharmacology*; D049891:Mercenaria; D009638:Norepinephrine / Q000494:pharmacology*; D013618:Tachyphylaxis; D018536:Venus
chemical_list: D004809:Ephedrine; D009638:Norepinephrine
keywords: EPHEDRINE/pharmacology; HEART/pharmacology; NOREPINEPHRINE/pharmacology