Table 3.

Number of N/P ganglion neurons remaining in knockout or double-knockout mice at birth

Genotype	Total number of neurons	Percent of wild type
Wild type (n = 6)	3976 ± 294	100
nt3^+/− (n = 4)	2711 ± 251	68^3-150
nt3^−/− (n = 6)	2331 ± 222	59^3-160
bdnf^+/− (n = 4)	2590 ± 145	65^3-150
bdnf^−/− (n = 8)	1645 ± 194	41^3-160
nt4^+/−(n = 2)	3265 ± 201	82
nt4^−/− (n = 8)	1651 ± 357	42^3-160
nt3^−/−/bdnf^−/−(n = 6)	1340 ± 145	34^3-150
bdnf^+/−/nt4^+/−(n = 4)	2758 ± 126	69^3-150
bdnf^−/−/nt4^−/−(n = 4)	720 ± 80	18^3-160

Number of N/P ganglion neurons at birth innt3^−/−,bdnf^−/−, andnt4^−/− mice and double-mutant mice (± SEM).n = number of ganglia counted. Student’s ttest.
↵F3-150 p < 0.05;
↵F3-160 p < 0.01.