On the question of subclassification of  -adrenoceptors.
D000317:Adrenergic alpha-Antagonists / Q000037:antagonists & inhibitors / Q000494:pharmacology; D000818:Animals; D001011:Aorta / Q000187:drug effects; D001665:Binding Sites; D002118:Calcium / Q000378:metabolism; D005021:Ethylamines / Q000494:pharmacology; D066298:In Vitro Techniques; D007700:Kinetics; D008297:Male; D011817:Rabbits; D051381:Rats; D011941:Receptors, Adrenergic; D013997:Time Factors; D014649:Vas Deferens / Q000187:drug effects
D000317:Adrenergic alpha-Antagonists; D005021:Ethylamines; D011941:Receptors, Adrenergic; D002118:Calcium