The cyclical variation in the percentage of ciliated cells in the normal human endometrium

Abstract

The percentage of ciliated cells in the luminal and glandular epithelia of endometrial samples from 68 normal women was studied. Although the concentrations of ciliated cells found in the luminal epithelium tended to lag behind and below those found in the glandular epithelium, no significant difference was found between the absolute percentages of ciliated cells in each site. The number of ciliated cells increased during the proliferative phase to reach a maximum of around 20%. This was maintained during ovulatory phase, and then declined. The hormonal basis of this variation is discussed.