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Positional signalling and specification of digits in chick limb morphogenesis

Nature volume 254, pages 199202 (20 March 1975) | Download Citation

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Abstract

The interpretation of positional information can provide the basis for pattern formation in limb morphogenesis. The gradient in positional information along the antero–posterior axis, which is specified with respect to a localised boundary region, can be modified by grafting this region to successive positions along the axis. The pattern of digits obtained is consistent with a model based on diffusion of a labile morphogen and is thus similar to models proposed for the development of pattern in invertebrates.

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Affiliations

  1. Department of Biology as Applied to Medicine, The Middlesex Hospital Medical School, London W1P 6DB, UK

    • C. Tickle
    • , D. Summerbell
    •  & L. Wolpert

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https://doi.org/10.1038/254199a0

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