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Background The bone morphogenetic protein (BMP) signaling gradient is central for dorsoventral patterning in amphibian embryos. This gradient is established through the interaction of several BMPs and BMP antagonists and modulators, some secreted by Spemann's organizer, a cluster of cells coordinating embryonic development. Anti-dorsalizing morphogenetic protein (ADMP), a BMP-like transforming growth...
Gastrulation marks the onset of germ layer formation from undifferentiated precursor cells maintained by a network including the Pou5f1 gene, Oct3/4. Negative regulation of the undifferentiated state is a prerequisite for germ layer formation and subsequent development. A novel cross‐regulatory network was characterized including the Pou5f1 and Cdx1 genes as part of the signals controlling the onset...
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