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Various congenital anomalies of the eyelids can result from abnormal tissue proliferation, fusion, and reopening of the eyelids. Therefore, it is important to study the molecular mechanisms underlying eyelid development, focusing on cell behaviors. Mammalian eyelid development occurs in four steps: specification, growth, epithelial fusion, and reopening. Epithelial-mesenchymal interactions are fundamental...
During vertebrate limb development, the apical ectodermal ridge (AER) plays a vital role in both limb initiation and distal outgrowth of the limb bud. In the early chick embryo the prelimb bud mesoderm induces the AER in the overlying ectoderm. However, the direct inducer of the AER remains unknown. Here we report that FGF7 and FGF10, members of the fibroblast growth factor family, are the best candidates...
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