Salahdeen, Hussein M Endothelium-dependent and independent vasorelaxant effects of aqueous extract of Tridax procumbens Lin. leaf in rat aortic rings. [electronic resource] - Indian journal of experimental biology Dec 2012 - 883-8 p. digital Publication Type: Journal Article ISSN: 0019-5189 Subjects--Topical Terms: Acetylcholine--pharmacologyAnimalsAorta, Thoracic--drug effectsAsteraceae--chemistryCalcium Signaling--drug effectsCyclic GMP--physiologyDose-Response Relationship, DrugEndothelium, Vascular--drug effectsFemaleMaleNG-Nitroarginine Methyl Ester--pharmacologyNitric Oxide--physiologyNitroprusside--pharmacologyPhenylephrine--pharmacologyPlant Extracts--isolation & purificationPlant Leaves--chemistryPotassium--pharmacologyRatsRats, WistarSecond Messenger Systems--drug effectsSolventsVasodilation--drug effectsVasodilator Agents--isolation & purificationWater