October 1975
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Comptes rendus des séances de l'Académie des sciences. Série D, Sciences naturelles
Ectodermic blastomeres from arrested nucleocytoplasmic blastulae obtained by nuclear graft between Ambystoma mexicanum (A. m.) and Ambystoma dumerilii (A. d.), are transplanted in the blastocoele of recipient Pleurodeles waltlii blastulae. Histo-autoradiographic analysis shows that hybrid cells have cellular affinities and multiplication capacities very different from normal Ambystoma mexicanum blastulae isolated cells. The possibility that a revitalisation of lethal blastomeres can occur should not be retained.