“…). Unlike other parts of the nervous system, the OE retains a lifetime capacity for wholesale anatomical and functional recovery after injury (Nagahara, ; Schultz, ; Graziadei, ; Monti Graziadei and Graziadei, ; Morrison and Costanzo, ; Schwob et al, ; Costanzo, ; Cummings et al, ; Christensen et al, ; Schwob, ; Iwema et al, ; Schwob and Costanzo, ; Cheung et al, ; Holbrook et al, ). This regenerative capacity implies the lifelong persistence of stem cells, i.e., cells that are able to progress through intermediate progenitor cell stages to generate all of the differentiated cell types of the epithelium, including neurons, and that maintain that tissue totipotency through unlimited self‐renewal (Schwob et al, ).…”