title: Different modes of action of clonidine on isolated canine veins.
mesh_terms: D000818:Animals; D003000:Clonidine / Q000494:pharmacology*; D004285:Dogs; D004305:Dose-Response Relationship, Drug; D066298:In Vitro Techniques; D008297:Male; D011169:Portal Vein / Q000187:drug effects; D011224:Prazosin / Q000494:pharmacology; D011942:Receptors, Adrenergic, alpha / Q000187:drug effects; D012501:Saphenous Vein / Q000187:drug effects; D014661:Vasoconstriction / Q000187:drug effects*; D014680:Veins / Q000187:drug effects*
chemical_list: D011942:Receptors, Adrenergic, alpha; D003000:Clonidine; D011224:Prazosin