Table 3.

Retrograde FB labeling in X98 and X94 mice

		L2/3	L4	L5	L6	All layers
X98 (N = 3)	% FB+ of all GFP+	11.3 (0.9)	4.5 (1.1)	34.5 (6.8)	34.1 (8.4)	84.4 (5.1)
	% FB+ in layer	93.4	100.0	91.6	74.6	84.4
X94 (N = 3)	% FB+ of all GFP+	4.8 (2.0)	3.2 (1.2)	4.8 (0.9)	1.4 (0.8)	14.3 (3.5)
	% FB+ in layer	54.7	7.4	12.4	16.1	14.3

In each genotype, the top row is the number of FB-labeled GFP⁺ cells per layer as a percentage of all GFP⁺ cells counted in each brain, averaged by genotype. The SEM is indicated in parenthesis. Bottom row, Same numbers expressed as a percentage of all GFP⁺ cells in each layer. These data are plotted in Figure 3.