Table 1.

Number of Ribbon Contacts of RB Cells Paired With Adjacent RB Cells

RB cell number	RB cell number
	14	15	16	17	18	19	20	21	22	Total
14		3	4	7	0	0	0	0	0
15	3		0	0	0	0	0	0	0
16	4	0		2	3	0	0	0	0
17	7	0	2		3	2	0	1	1
18	0	0	3	3		0	0	0	6
19	0	0	0	2	0		4	0	0
20	0	0	0	0	0	4		0	0
21	0	0	0	1	0	0	0		5
22	0	0	0	1	6	0	0	5
Subtotal	14	3	9	16	12	6	4	6	12	82

¹Nine RB cells, 14–22, that reach AII amacrine cell 3 at their axon terminals have 82 ribbon contacts in 41 pairs in rod spherules.