title: Intracellular pH of Limulus ventral photoreceptor cells: measurement with phenol red.
mesh_terms: D000818:Animals; D003400:Astacoidea; D001826:Body Fluids / Q000032:analysis*; D002021:Buffers; D003623:Dark Adaptation; D004594:Electrophysiology; D006737:Horseshoe Crabs; D006863:Hydrogen-Ion Concentration; D007424:Intracellular Fluid / Q000032:analysis* / Q000502:physiology; D008845:Microinjections; D008853:Microscopy / Q000295:instrumentation; D010635:Phenolphthaleins; D010637:Phenolsulfonphthalein; D010786:Photoreceptor Cells / Q000032:analysis* / Q000502:physiology; D013053:Spectrophotometry / Q000295:instrumentation / Q000379:methods
chemical_list: D002021:Buffers; D010635:Phenolphthaleins; D010637:Phenolsulfonphthalein