Table 1.

Ultrastructural characteristics of cone pedicles fromnrc and wild-type retinas (6 and 8 dpf)

	Wild-type		nrc
	Day 6	Day 8	Day 6	Day 8
Pedicles	50	50	50	50
Synaptic ribbons	73	75	105	86
Ribbons/pedicle1-a	1.46 ± 0.54	1.53 ± 0.65	2.10 ± 0.93	1.75 ± 0.88
Ribbons with arciform density1-b,1-c	71%	67%	14%	17%

^F1-a No statistically significant difference between the four conditions (p = 0.05).

^F1-b No difference between wild-type dpf 6 and 8 or nrc dpf 6 and 8 (p > 0.05).

^F1-c Statistically significant difference between wild type and nrc at both ages (p < 0.05).