Estrogen receptors in the inner ear during different stages of pregnancy and development in the rat

Abstract

ERs are present in the cochlea of the rat and vary during maturation and pregnancy. No ERs were found in the fetal cochleas. Of the non-fetal time points measured, the expression levels of ERs in the rat cochlea were highest at the postnatal age of 21 days and were lowest during late pregnancy (day 18).