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Figure 4


Fig. 4. Cdx2 protein gradients detected by immunohistochemistry in 8.7 day embryos. (A-C) Wild-type embryos. (D) OE2 transgenic embryo. C is an enlargement of the field boxed in A. B is a section from a similar embryo cut along the plane shown in A. nt, neural tube; psm, presomitic mesoderm; ant, anterior; post, posterior; S, somite. Scale bar: 0.25 mm.