Extrusion of Cells in the Tubules of the Epididymis

Abstract

MR. P. G. ‘ESPINASSE has remarked1 that the extrusion of nuclei which has been observed to occur from the epithelium of the oviduct in the mouse could not be closely related, as had been suggested, to the “strous cycle. His conclusion on this point seems to derive indirect support from a comparable phenomenon which takes place in the epididymis of the mouse and rat. In those tubules of the epididymis which are lined with a single layer of columnar cells the nuclei of which are close to the basement membrane, a process of cellular extrusion is particularly well seen, though it occurs also in other tubules where the epithelium is cuboidal.