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Fig. 5 Expression of N-cadherin during gastrulation and somitogenesis. N-cadherin mRNA expression in WT, 60% epiboly (A-A″), 95% epiboly (B-B″), 3 som (C-C″), 6 som (D-D″), and 18 som (E-E″) embryos. Animal views (A,B), dorsal views (A′,B′), and sagital views (A″,B″). Asterisk indicates lack of N-cad expression in the ventral epidermis. (C-E″) Cross-sections through the head (C,D,E), trunk (C′,D′,E′), and tail (C″,D″,E″) regions. Insets indicate the angle at which the embryo was sectioned. Abbreviations: V, ventral; L, lateral; D, dorsal; A, animal; NT, neural tube; NC, notochord; som, somite; TB, tailbud; OV, otic vessicle; PSC, postmigratory slow cells.