From: Knockout of ERK5 causes multiple defects in placental and embryonic development
+/+
%
+/-
-/-
E9.5
30
24
66
53
28
23
E10
41
25
92
55
34
20
E10.5
29
59
51
28*
E11.5
17
40
12**
adult
134
36
236
64
0