Figure 5.

Abundance of the three positional classes of synaptic contacts over the entire cone area for each ON bipolar cell type. A group of ON bipolar cells of the same type shows a characteristic distribution of contacts with cone pedicles. Three positional classes of contacts with cones are invaginating (hexagons), TA (rectangles), and NTA (ellipses). Contacts with rods are only noted for GB. Twelve pedicles (22, 28, 30, 31, 32, 36, 38, 41, 46, 47, 48, and 51) for IMB, DB, and GB, and six S-cone pedicles (15, 26, 34, 39, 94, and 118) for BB, designated in gray, are used for contact analysis per cone in Figures 6D,E.