title: Optical measurements of the rapid pH-change in the visual process during the metarhodopsin I-II reaction.
mesh_terms: D000818:Animals; D002417:Cattle; D006863:Hydrogen-Ion Concentration; D010783:Photometry; D010786:Photoreceptor Cells / Q000032:analysis; D012168:Retinal Pigments / Q000378:metabolism*
chemical_list: D012168:Retinal Pigments