Animal-human hybrid-embryo research.

摘要

Last week, the Human Fertilisation and Embryology Authority (HFEA)-the agency that oversees embryo research in the UK-ruled that scientists could be licensed to create animal-human hybrid-embryos for stem-cell research The decision is not as radical as it might sound.The Sept 6 ruling applies to a procedure in which the nucleus of a human somatic cell is introduced into an animal egg that has had its nucleus removed The altered cell is then stimulated to begin embryonic development, Stem cells can be harvested from the embryo, a process that usually destroys it.