Patterning the sea urchin embryo: gene regulatory networks, signaling pathways, and cellular interactions.

@article{Angerer2003PatterningTS,
  title={Patterning the sea urchin embryo: gene regulatory networks, signaling pathways, and cellular interactions.},
  author={Lynne M. Angerer and Robert C. Angerer},
  journal={Current topics in developmental biology},
  year={2003},
  volume={53},
  pages={159-98}
}
We discuss steps in the specification of major tissue territories of the sea urchin embryo that occur between fertilization and hatching blastula stage and the cellular interactions required to coordinate morphogenetic processes that begin after hatching. We review evidence that has led to new ideas about how this embryo is initially patterned: (1) Specification of most of the tissue territories is not direct, but proceeds gradually by progressive subdivision of broad, maternally specified… CONTINUE READING

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