. 2011 Mar 2;31(9):3384–3399. doi: 10.1523/JNEUROSCI.4899-10.2011

Table 1.

Quantification of structural parameters based on 3-D reconstructions of single WT RGC arbors in the dLGN in WT and β2^−/− mice at multiple developmental time points

		P4		P8/P9		P14/P15
Number of reconstructed arbors	WT	10		7		9
Number of reconstructed arbors	β2^−/−	9		6		6
Total length (μm)	WT	498.70 ± 186.30	^#	984.36 ± 154.85	^*	3627.01 ± 842.37
				^*
	β2^−/−	689.16 ± 183.51	^**	2216.63 ± 467.06		4255.63 ± 1101.23
Number of branch points	WT	2.70 ± 1.50	^***	14.14 ± 2.24	^*	60.89 ± 17.47
Number of branch points	β2^−/−	7.11 ± 3.15		16.17 ± 4.47	^*	68.50 ± 23.30
Average branch length (μm)	WT	184.91 ± 42.50	^*	66.64 ± 6.25		65.47 ± 8.65
				^**
	β2^−/−	128.86 ± 26.65		136.10 ± 17.35	^**	68.25 ± 8.37
Arbor area (μm²) (coronal plane)	WT	4787.21 ± 1542.14		7507.60 ± 1367.55	^##	15,491.57 ± 3263.96
				^###
	β2^−/−	5041.15 ± 1190.20	^**	12,374.90 ± 2367.78		19,417.90 ± 3995.77
Arbor density (coronal plane)	WT	0.15 ± 0.01	^**	0.19 ± 0.01	^**	0.27 ± 0.02
		^**		^#
	β2^−/−	0.18 ± 0.01	^**	0.24 ± 0.02		0.26 ± 0.02
Arbor area (μm²) (sagittal plane)	WT	3551.08 ± 1215.81		5703.62 ± 1331.42	^*	12,673.87 ± 2282.74
				^**		^##
	β2^−/−	5886.62 ± 1353.09	^**	14,373.75 ± 1895.13		21,311.53 ± 4511.34
Arbor density (sagittal plane)	WT	0.18 ± 0.01	^***	0.25 ± 0.01	^*	0.32 ± 0.02
						^#
	β2^−/−	0.18 ± 0.01	^**	0.22 ± 0.02		0.26 ± 0.02

Mean ± SEM of various structural parameters for WT and β2^−/− retinogeniculate arbors at different ages. Asterisks between columns and rows identify statistical difference between ages and genotypes:

*p < 0.05;

**p < 0.01;

***p < 0.001. For completion, all p values < 0.1 are reported. Number signs indicate p values for indicated age and genotype groups:

^#p = 0.07;

^##p = 0.06;

^###p = 0.09.