Stem cell-based approaches: Possible route to hearing restoration?

Figure 2 Overview of exogenous donor cell types that have been tested for their potential to give rise to hair cell- and / or spiral ganglion neuron-like cells. Advantages and disadvantages of the various donor cell types are indicated, as well as the main results that have been obtained with these cells in in vivo and in vitro studies. HC: Hair cell; SGNs: Spiral ganglion neurons.