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Fig. 2. Both HB-EGF null embryos and embryos with an uncleavable mutant form of
HB-EGF show delays in eyelid closure. (A,B) Representative whole-mount
lacZ stained (black arrow) HBdel/+ eyelids (A) and
HBdel/del eyelids (B) at E15.5. Scale bar: 500 µm for A and B.
(C) Schematic diagram showing how the progression of eyelid closure was
measured. (D) Comparison of the progression of eyelid closure along the long
axis (left panel) and the short axis (right panel) between HBdel/+
(blue dots, n=19) and HBdel/del (orange dots,
n=20) embryos. (E) Comparison of the progression of eyelid closure
along the long axis (left panel) and the short axis (right panel) between
HBuc/+ (blue dots, n=18) and HBuc/uc (yellow
dots, n=16) embryos. Horizontal bars in the graphs indicate the mean
value (D,E).