Table 2.

Effect of HA-Ub on embryonic lethality in UbC^−/− mice

Age	Litters	UbC+/+; HA-Ub	UbC+/−; HA-Ub	UbC−/−; HA-Ub	Dead	Total
E12.5–13.5	2	6	10	3	0	19
E14.5–15.5	4	8	21	11	0	40
E16.5–17.5	2	2	8	4	3	17
E18.5	1	2	6	0	3	11
Birth	23	58	96	0	0	154