In vertebrates, the face is formed in part by neural crest cells. It has been assumed that the developmental fate of these cells is inbuilt. New work, however, reveals a role for instructive signals from nearby cells.
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Pasqualetti, M., Rijli, F. The plastic face. Nature 416, 493–494 (2002). https://doi.org/10.1038/416493a
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DOI: https://doi.org/10.1038/416493a
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