Figure 4 of Jiang, Mol Vis 2010; 16:983-990.

Figure 4. Integrated retinal progenitor cells (RPCs) expressed synaptic protein: newly developed synapses expressed the synapse protein bassoon (A). Synaptic connectivity of integrated cells (B): newly developed synapses appear to make synaptic contact with bipolar neurons, identified by immunolabeling with protein kinase C (PKC). Scale bar represents 8 µm.