Table 1.

Embryonic lethality in SOCS3^−/− mice

Age of embryos	No. of embryos*SOCS3+/+:SOCS3+/−:SOCS3−/−	Proportion of SOCS3−/− embryos, %	Viability of SOCS3−/− embryos, %
E9.5	20:38:19	25	100
E10.5	5:10:8	35	100
E11.5	52:69:26	18	33
E12.5	41:72:25	18	50
E13.5	12:19:2	6	0
E14.5 and 15.5	6:10:0	0	0

^*Number of embryos of each genotype from matings of SOCS3^+/− parents are shown.