Table 5.

Ventral expansion of gli2 expression domain in the forebrain of Hh pathway mutants

Gene	Ventral margin of gli2 expression domain#		P
	Wild-type*	Mutant*
smub641	63 ± 8% (5s, 5e)	92 ± 8% (2s, 2e)	< 0.02
dtrte370	63 ± 9% (4s, 4e)	74 ± 1% (7s, 5e)	< 0.005
yotty119	68 ± 5% (6s, 5e)	83 ± 5% (5s, 5e)	< 0.001

^#Forebrain sections were scored at the level of the epiphysis, which was identified by the presence of islet1-expressing cells (Figs. 8G–J). The dorsoventral height of the neural tube was measured, and the length of the gli2 expression domain (measured from the dorsal surface) was expressed as a fraction (%) of the height of the neural tube.

^*The first number in the parenthesis indicates the total number of sections scored, while the second number indicates the number of embryos these sections came from.