Experimental Polyembryony in Mammals

  • J. A. Modliński
  • J.-P. Ozil
Conference paper


Natural polyembryony is an extremely rare occurrence in mammals although the incidence of identical individuals is unknown in most species because generally they go unnoticed. The nine-banded armadillo (Dasypus novemcinctus) usually has monozygotic quadruplets and the eleven-banded armadillo (Dasypus hybridus) has between 7 and 12 (usually 8) identical young in each litter. Monozygotic twins also occur naturally in humans, sheep, and cattle, albeit rarely.


Nuclear Transfer Nuclear Transplantation Single Blastomere Sheep Embryo Normal Blastocyst 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1987

Authors and Affiliations

  • J. A. Modliński
    • 1
  • J.-P. Ozil
    • 2
  1. 1.Department of Embryology, Institute of ZoologyUniversity of WarsawPoland
  2. 2.Biology of Fertilization UnitINRAJouy-en-JosasFrance

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