title: Inhibitory and excitatory beta adrenergic receptors in the vas deferens of guinea pig.
mesh_terms: D000318:Adrenergic beta-Agonists / Q000494:pharmacology; D000818:Animals; D004558:Electric Stimulation; D006168:Guinea Pigs; D066298:In Vitro Techniques; D007545:Isoproterenol / Q000494:pharmacology*; D008297:Male; D009119:Muscle Contraction / Q000187:drug effects; D011941:Receptors, Adrenergic; D013565:Sympatholytics / Q000494:pharmacology; D014649:Vas Deferens / Q000187:drug effects*
chemical_list: D000318:Adrenergic beta-Agonists; D011941:Receptors, Adrenergic; D013565:Sympatholytics; D007545:Isoproterenol