Emile Lheureux

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Brachial nerve tip deviation has been carried out at various points in the upper arm and close to the limb. Some associations of cutaneous or muscular tissue from two opposite sides - dorsal and ventral or anterior and posterior - of the upper arm were made at these points. Various degrees of development of the nerve-induced supernumerary limbs were(More)
  • Emile Lheureux
  • Wilhelm Roux' Archiv für Entwicklungsmechanik der…
  • 1975
X-irradiation suppresses the morphogenetic power of limb tissues. Transplantation of non-irradiated tissues onto an irradiated limb allows, one to study the influence of the grafts qualities (viz. dorsal, ventral, anterior and posterior qualities) and the influence of the orientation of these grafts both on the degree of development and on the orientation(More)
It has been established that X-ray irradiation localized to a forelimb or entire irradiation of premetamorphic Pleurodeles larvae prevented limb regeneration. Transplantation of non-irradiated skin, dermis or muscle to limb stumps of locally irradiated newts was sufficient to allow a blastema to develop. Transplantation of the same tissues to limb stumps of(More)
  • Emile Lheureux
  • Wilhelm Roux' Archiv für Entwicklungsmechanik der…
  • 1975
In order to specify the role of skin and internal tissues in limb regeneration, we have replaced stump skin by skin from one side or from two opposite sides of the limb or from the flank. 1. After transplantation of limb skin, from one side regenerates are partially abesnt, normal, or multiple. Experimental variations were 90‡ rotation of the proximo-distal(More)
An X-irradiated newt limb is able to regenerate if non-irradiated skin as well as non-irradiated muscle is transplanted to the stump. Non-irradiated epidermis is brought to the stump with a skin graft but not with a muscle graft. In order to know whether limb regeneration required healthy epidermis or not, a triploid skin cuff was set at the most proximal(More)
This paper is a review of the main findings of our laboratory on the control of regeneration by cell interactions. These include results related to the role of both cell contact and local soluble factors in regeneration of the legs of insects and newts and of the parapodia and segments of nereis. The pattern of these structures is considered to be defined(More)
The effects of two vitamin A analogues, retinol palmitate and retinoic acid, on pattern formation during limb regeneration in larvae of two European newts, P. waltl and T. vulgaris are described. The response of the regenerating limb to retinoid treatment differed according to the larval stage of development for P. waltl. Young larval limbs, which were(More)
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