Specifying positional information in the embryo: looking beyond morphogens.
basic_science · Level V
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- Record sourced from PubMed, PMID 17662932.
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Abstract
Concentration gradients of small diffusible molecules called morphogens are key regulators of development, specifying position during pattern formation in the embryo. It is now becoming clear that additional or alternative mechanisms involving interactions among cells are also crucial for positional specification.
Medical subject headings
- Body Patterning
- Drosophila melanogaster
- Embryo, Nonmammalian