Retinal cells and wiring diagram. Schematic diagram of retinal cells with their main connections. R and C, rods and cones; RBC and CBC, rod and cone bipolar cells; AC, amacrine cells; GC, ganglion cells; MC, Muller cells; A, astrocytes; OPL and IPL, outer and inner plexiform layers. Arrows indicate synaptic contacts and the direction of communication. The symbol of an electric resistance shows the gap junction between an amacrine cell and a cone bipolar. The two sublaminae (on and off) of the IPL are indicated. Both wide-field and small-field amacrines are represented, as well as examples of cone bipolar cells branching at different depths in the IPL.