Figure 2. Haematoxylin and eosin staining of retinal explants after 24 h incubation Selected micrographs of retinal explant at t=0 (40X) and 24 h (20X) post culture. Isolated retinae cultured as explants have identifiable retinal layers; photoreceptors, outer nuclear layer (ONL), outer plexiform layer (OPL), Inner nuclear layer (INL), Inner plexiform layer (IPL) and ganglion cell layer (GCL).