title: Cyclic AMP as a second messenger.
mesh_terms: D000818:Animals; D000242:Cyclic AMP / Q000502:physiology*; D006801:Humans; D011941:Receptors, Adrenergic / Q000502:physiology; D012098:Reproduction
chemical_list: D011941:Receptors, Adrenergic; D000242:Cyclic AMP