Homoiogenetic regulation through the ectoderm on localized expression of the hatching gland phenotype in the head area of Xenopus embryos.

Abstract excerpt

Ectoderm pieces explanted from embryos of Xenopus laevis were cultured and examined for differentiation of hatching gland cells, using immunoreactivity against anti-XHE (Xenopus hatching enzyme) as a marker. The anterio-dorsal ectoderm excised from stage 12-13 (mid-late gastrula) embryos developed hatching gland cells. Meanwhile, the posterio-, but not the anterio-dorsal ectoderm from stage 11 (early gastrula)...

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