Cells

Human embryonic stem (ES) cells

  • Cell nuclear replacement (CNR) involves removing the nucleus of a human egg cell and replacing it with the nucleus from a human body cell, such as a skin cell
  • The egg is then artificially stimulated
  • This causes the egg to divide and behave in a similar way to a standard embryo fertilised by sperm
  • The eggs used are left over from IVF treatment


Image source:http://www.genetics-and-society.org/technologies/cloning/researchscience.html

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