Table 1. Embryonic survival frequency of Snx5^+/+, Snx5^+/- and Snx5^-/- littermates.

Genotype n (%)
Age of embryos (day)	Snx5+/+	Snx5+/-	Snx5-/-	Total n
E14.5 ∼ E16.5	33 (20.3)	88(54.3)	41(25.3)	162
E17.5	18(23.3)	38(49.3)	21(27.2)	77
E18.5	124(30.2)	207(50.3)	80(19.4)*	411

Embryos from timed matings were genotyped on embryonic day 14.5∼16.5, 17.5 and 18.5 day. Fourth columm shows the observed percentage of Snx5-/- mice (the Mendelian percentage is 25%).

^*Caculated using χ² test comparing the expected and observed frequency of viable Snx5^-/- mice. (P = 0.0089)