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Last updated on April 20, 2014 at 21:20 EDT

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2005-09-08 14:50:00

What exactly makes a stem cell a stem cell? The question may seem simplistic, but while we know a great deal of what stem cells can do, we don't yet understand the molecular processes that afford them such unique attributes. Now, researchers at Whitehead Institute for Biomedical Research working with human embryonic stem cells have uncovered the process responsible for the single-most tantalizing characteristic of these cells: their ability to become just about any type of cell in the body,...

2005-06-20 22:45:26

Copenhagen, Denmark: Early embryos with abnormal chromosomes are capable of returning to normal when grown in culture in the laboratory, according to new research presented to the 21st annual conference of the European Society of Human Reproduction and Embryology today (Monday 20 June). While such embryos are not capable of developing into normal foetuses if implanted in a woman's womb, the discovery has important implications for stem cell production, especially in countries where the...