Word: celle
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...fact remains that any stem cells created using this approach would still not qualify for federal funding - since it would entail the creation of new stem cell lines - and, in addition, still does not address concerns about harm to the embryo that many religious and conservative groups have. For members of the Catholic Church, which opposes any creation of human embryos outside of the human body, the technique still involves manipulating - and potentially harming - an embryo. "The problem is that the researchers are subjecting a human being to risks without any advantage to that individual," says Edward Furton, staff ethicist...
...technique does not harm the embryo. The procedure, which is based on pre-implantation genetic diagnosis, a test commonly done when couples at IVF clinics are concerned about passing on genetic diseases such as cystic fibrosis and Duchenne muscular dystrophy, is supposed to spare the embryo after a single cell is removed. But since the test has only been used widely since the 1990s, it's not absolutely clear that taking one cell out of the embryo has no effect on normal development of the implanted embryos...
...even if the procedure turns out to be safe for the embryo, there remains the very real question of what quality stem cells the technique would produce. Some studies suggest that even at the eight-cell stage, when the blastomere, or single cell, is removed, the embryo has already embarked on a development path, and has assigned certain lineages to each of the eight cells; if that's the case, then the stem cells derived from a particular blastomere may already be restricted to becoming just specific types of cells - and may not be useful in generating...
...scientists are quick to point out, this report is the first of what will likely be a series of papers replicating and confirming the technique. Until more labs try and succeed in generating stem cells this way, it's not clear what role this procedure will have in resolving the stem cell impasse...
...text message on my cell phone came just as I was standing in my Shanghai apartment, surrounded by packing boxes and bubble wrap. Preparing to leave for Southeast Asia after more than six years in China, I was feeling nostalgic. China is not an easy place to be a journalist - our phones are often tapped, our sources sometimes harassed - but the economic developments that have transformed this country bring with them an infectious optimism. The lives of people in China, I reflected, really are getting better. The polite packer helping direct traffic in our apartment confided to my husband that...