RHO and retinal degeneration: To check whether SDSCs would rescue the deteriorated vision of retinal degeneration animals, a total of 2 × 105 individual SDSCs were delivered to the subretinal space in RhoP23H/+ mice at P40 when 1/3–1/4 of their photoreceptor cells were lost and their vision started to decrease compared to the wild-type Rho+/+ mice (Fig. 2a–d) [15].