Figure 6. Porcine neuroretina thickness during the culture and coculture period. Neuroretina tissue thickness (A) on day 9 of culture and on day 9 of coculture with RPE was reduced compared to the freshly isolated tissue. The thickness of the neuroretina cultures alone on day 9 was significantly less than that of the neuroretinas that had been cocultured with RPE. ONL (B) and INL (C) thickness on day 9 of culture and on day 9 of coculture with RPE was reduced compared to the freshly isolated tissue. The ONL (B) and INL (C) thickness of the neuroretina cultures alone on day 9 was significantly less than that of the neuroretinas that had been cocultured with RPE. *p<0.02 (n=20) and **p<0.0001 (n=20). ONL=outer nuclear layer; INL=inner nuclear layer.