title: Peripheral alpha-adrenergic receptors. Introduction.
mesh_terms: D000818:Animals; D006801:Humans; D009638:Norepinephrine / Q000502:physiology; D011942:Receptors, Adrenergic, alpha / Q000502:physiology*
chemical_list: D011942:Receptors, Adrenergic, alpha; D009638:Norepinephrine