Table 2.

Effects of nNOS knock-out and MK-801 administration on parameters of dendritic growth

	+/+ saline (n = 48)	−/− saline (n = 33)	+/+ MK-801 (n = 43)	−/− MK-801 (n = 45)
Number of primary dendrites (ns)	3.7  ± 0.2	3.8  ± 0.2	3.6  ± 0.1	3.8  ± 0.2
Number of bifurcations (p < 0.001)	10.3  ± 0.5	8.6  ± 0.6*	7.4  ± 0.5*	7.1  ± 0.4*
Total arborization (μm) (p < 0.001)	2668  ± 108	2372  ± 111	2186  ± 111*	2080  ± 119*
Longest dendrite (μm) (ns)	446  ± 12	401  ± 12	424  ± 11	425  ± 18
Cell body area (μm2) (p < 0.001)	617  ± 47	719  ± 54	464  ± 35*	546  ± 41**

Results are mean ± SEM. Results of group comparisons made using ANOVA are indicated in parentheses after parameter. ns indicates no significant difference between groups. *indicates significant difference from +/+ saline, ** indicates significant difference from −/− saline (p < 0.05; Student-Newman–Keuls).