Bi- and uniciliated ependymal cells define continuous floor-plate-derived tanycytic territories

Abstract

Ependymal cells lining the adult brain ventricles are comprised of multiciliated cells and a rare subpopulation with two cilia (E2 cells) whose origin and function remain unknown. Here the authors find E2 cells in the 3rd ventricle of mice and humans, along with a third ependymal cell type with only a primary cilium, and provide details of their marker profile and developmental origins.