title: Changes in cochlear endolymph Na +  concentration measured with Na +  specific microelectrodes.
mesh_terms: D000818:Animals; D006168:Guinea Pigs; D000860:Hypoxia / Q000503:physiopathology; D007761:Labyrinthine Fluids / Q000032:analysis / Q000378:metabolism*; D008722:Methods; D008839:Microelectrodes; D010477:Perfusion; D012964:Sodium / Q000032:analysis / Q000378:metabolism*
chemical_list: D012964:Sodium