TABLE 2.

Loss of p53 does not rescue NS deficiency^a

Stage	No. of litters	No. of embryos
		Total	NS+/+	NS+/−	NS−/−	Abnormal
E3.5	1	9	NDb	ND	2 (22)	2
E9.5	1	8	5	3	0 (0)	0
E12.5	6	45	13	32	0 (0)	0
F2	17	81	23	58	0 (0)	0

^aNS^+/− p53^LSL/LSL mice crossed with NS^+/− p53^−/− mice.

^bND, not determined.