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Fig. 7. Proliferation in definitive endoderm. Cryosections of wild-type
(A,C) and chato mutant (B,D) mouse embryos at different
embryonic stages were labeled with anti-E-cadherin (red) and phospho-histone
H3 (green) antibodies. Mitotic cells (green) in the definitive endoderm
(highlighted in red by localization of E-cadherin) are indicated by
arrowheads. E-cadherin is also present in E7.5 epithelia (ep), embryonic
surface ectoderm (se) and extraembryonic visceral endoderm (VE, dashed line).
Proliferation of mesoderm and epithelial tissues was not significantly
different between wild-type (n=21 embryos/380 sections) and
chato mutant (n=3 embryos/56 sections) embryos at these
stages.