IMPORTANCE OF LIMB TISSUE ASSOCIATIONS IN DEVELOPMENT OF NERVE-INDUCED SUPERNUMERARY LIMBS IN NEWT PLEURODELES-WALTLII-MICHAH

  • 1 January 1977
    • journal article
    • research article
    • Vol. 38  (APR) , 151-173
Abstract
Nerve-induced supernumerary limbs were used to study tissue interactions in the newt [P. waltlii] limb development. The brachial nerve tip diverted on the dorsal or ventral side of the upper arm gave rise to a strongly hypomorphic supernumerary limb. When a piece of skin or muscle from the opposite side was transplanted close to the diverted nerve tip, a normal nerve-induced supernumerary limb development occurred. A contact of dorsal and ventral or anterior and posterior tissues was necessary to allow the transverse axes to establish and a harmonious limb to develop.

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