title: Intracellular mechanism of photoreceptor excitation.
mesh_terms: D000818:Animals; D001696:Biomechanical Phenomena; D006152:Cyclic GMP / Q000378:metabolism; D006160:Guanosine Triphosphate / Q000378:metabolism; D006801:Humans; D007425:Intracellular Membranes / Q000502:physiology*; D010727:Phosphoric Diester Hydrolases / Q000378:metabolism; D010775:Photic Stimulation; D010786:Photoreceptor Cells / Q000201:enzymology / Q000378:metabolism / Q000502:physiology*; D012243:Rhodopsin / Q000502:physiology
chemical_list: D006160:Guanosine Triphosphate; D012243:Rhodopsin; D010727:Phosphoric Diester Hydrolases; D006152:Cyclic GMP