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Fig. 6. Defects in ventral body wall closure and eye development in
Bmp4lacZ/S2G mutants. (A) E17.5
Bmp4lacZ/S2G embryo with complete failure of ventral body
wall closure. (B) Coronal sections through E16 embryos. Arrowhead
indicates umbilical artery, arrow denotes midgut, which has been enclosed by
the ventral body wall in the Bmp4S2G/+ embryo but remains
externalized in the Bmp4lacZ/S2G littermate.
(C,D) E12.5 embryos showing loss of eye pigment in
Bmp4lacZ/S2G embryos. (E,F) Expression of
Tbx5 in E10.5 embryos, analyzed by whole-mount in situ hybridization.
e, eye; he, heart; lb, limb bud. Insets show staining of the eye at higher
magnification.