Table 1.

Effects of transgene expression on the architecture of motor neuron dendrites

Neuron parameter	LacZ	GluR1(Q)flip	GluR1(R)flip	F(2,70);p
Primary dendrites	5.7  ± 0.4	6.9  ± 0.4	7.9  ± 0.4*	F = 7.642;p = 0.001
Branch-points	15.1  ± 1.5	20.4  ± 1.4*,†	12.0  ± 0.9	F = 12.12;p < 0.001
Branch tips	21.1  ± 1.9	28.1  ± 1.6*,†	20.5  ± 1.1	F = 8.141;p < 0.001
Total dendrite arbor per cell (μm)	3173  ± 311	3231  ± 256	3065  ± 248	F = 0.105; p = 0.900
Longest dendritic path (μm)	608  ± 40	424  ± 27*	518  ± 28	F = 9.661;p < 0.001
Cross-sectional soma area (μm2)	1427  ± 171	1907  ± 125	1980  ± 137*	F = 8.141; p < 0.001

Numbers represent mean ± SEM of GluR1(Q)flip (n = 25), GluR1(R)flip (n = 27), or LacZ (n = 21) expressing neurons. F andp values were created with ANOVA.

^* Significant difference from LacZ;

^† significant difference from GluR1(R)flip (Scheffépost hoc test).