抄録
Cochlear endolymph, scala tympani perilymph and scala vestibuli perilymph were collected from fetal, neonatal and matured guinea pigs. The concentrations of Na and K in these fluids were assessed using a microflame photometer. By the 49th gestation day, electrolytes composition in the endolymph was already characterized by a high level of K and low level of Na.