Lack of spare  -adrenoceptors in cat spleen.
D000818:Animals; D002415:Cats; D004305:Dose-Response Relationship, Drug; D004837:Epinephrine / Q000008:administration & dosage / Q000494:pharmacology; D066298:In Vitro Techniques; D007545:Isoproterenol / Q000494:pharmacology; D009119:Muscle Contraction; D009130:Muscle, Smooth / Q000187:drug effects*; D009638:Norepinephrine / Q000494:pharmacology; D010643:Phenoxybenzamine / Q000494:pharmacology*; D011941:Receptors, Adrenergic / Q000187:drug effects*; D013154:Spleen / Q000032:analysis* / Q000187:drug effects
D011941:Receptors, Adrenergic; D010643:Phenoxybenzamine; D007545:Isoproterenol; D009638:Norepinephrine; D004837:Epinephrine