Figure 2. Alternative placement of human ES-derived RPE cells and cells from the neural tube–like portions of SNMs to identify the optimal
coculture method for the differentiation of photoreceptor precursor cells. A: Spherical neural mass (SNM)-derived single cells in the insert and embryonic stem (ES)-derived RPE cells in the bottom of
the well. B: ES-derived RPE cells (ERPE) in the insert and SNM-derived single cells in the bottom of the well. C: SNM-derived single cells on the outer surface of the insert and ES-derived RPE cells in the bottom of the well.