Supersensitivity of Amylase Secretion from Rat Parotid Tissue—Its Selective Nature for the β₂-Adrenergic Response

Abstract

In rat parotid tissue, amylase secretion and accumulation of cyclic AMP were not selective responses to the different β-subtypes, β₁ and β₂. However, the supersensitivity of the amylase secretory response induced by brief pretreatment with β-agonist was due specifically to a β₂-adrenergic response.