title: A common algorithm for the transduction, amplification and cellular response to photons, hormones, and neurotransmitters.
mesh_terms: D000465:Algorithms; D000818:Animals; D002477:Cells / Q000187:drug effects; D000242:Cyclic AMP / Q000502:physiology*; D006152:Cyclic GMP / Q000502:physiology*; D003624:Darkness; D006728:Hormones / Q000494:pharmacology*; D008027:Light; D008954:Models, Biological; D018377:Neurotransmitter Agents / Q000494:pharmacology*; D010786:Photoreceptor Cells / Q000502:physiology*; D011827:Radiation
chemical_list: D006728:Hormones; D018377:Neurotransmitter Agents; D000242:Cyclic AMP; D006152:Cyclic GMP