Figure 1.

Diagram of the organ of the Corti and its SC subtypes. A, Schematic cross-section of organ of Corti of an adult mouse cochlea depicting the positions of SCs and the nonsensory epithelial cell subtypes relative to the IHC and OHCs. Red dotted line indicates the third row of Deiters' cells, where Lgr5 expression remains throughout adulthood. B, Schematic representation of Lgr5^{EGFP-CreERT2/+}-targeted cells in green in neonatal cochlea. C, Schematic representation of PLP/CreER^T+-targeted SCs in green in neonatal cochlea. OHCs, Outer hair cells; IHC, inner hair cell; GER, greater epithelial ridge; IBC, inner border cell; IPhC, inner phalangeal cell; PCs, pillar cells; DC1, first row of Deiters' cell; DC2, second row of Deiters' cell; DC3, third row of Deiters' cell; Hen, Hensen's cells; LER, lesser epithelial ridge.