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. 2013 Aug 23;521(15):3541–3555. doi: 10.1002/cne.23370

Figure 2.

Figure 2

Electron micrographs at key points of the rod–RB–AII amacrine circuit. A: Divergence of a rod photoreceptor to two RB cells (RB14 and RB17) through the ribbon synapse (arrowhead) in its spherule. B: Y-shaped bifurcation of the RB-invaginating dendrite (RB19) within the rod spherule. C,D: Convergence of RB14 (C) and RB17 (D) to a common AII amacrine cell 3 through the ribbon synapses (arrowheads) at their axon terminals. Another type of amacrine cell makes conventional synapses (arrows) with RB17 in D. E: Gap junction (rectangle) between adjacent AII amacrine cells 2 and 3 is located close to the ribbon synapses (arrowheads) for their inputs from a common RB cell (RB16). Scale bars = 200 nm.