Word: celles
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...that time, some in the scientific community may voice concerns that the new guidelines are still too restrictive. The NIH falls short of proposing the use of federal dollars to create new embryos specifically for research purposes. The guidelines would only allow funding for stem cell lines generated from embryos that were "created for reproductive purposes, were no longer needed for this purpose, [or] were donated for research purposes." That means that researchers can only extract stem cells from existing embryos that would be discarded in the IVF process...
...While the new policy would certainly expand the number of stem cell lines eligible for federal funding - under Bush's policy, only a couple dozen lines qualified, whereas the new guidelines would include up to 700 or so lines, according to the NIH - it would prevent scientists from studying the one thing that would bring this treatment from the lab bench to the patient bedside: patient-specific stem cells. Because stem cells from donated embryos would not be genetically matched to the patients who need them, in practice, treating a patient with a spinal cord injury or diabetes who could...
...says its proposed guidelines reflect the public consensus about what is acceptable. "We believe there is strong broad support to use federal funds to conduct human embryonic stem cell research on cell lines derived from embryos created for reproductive purposes and no longer needed for that purpose," NIH's acting director, Dr. Raynard Kington, said in a teleconference. "Twice there has been legislation that would allow such use that passed both the House and Senate. There is not similar broad support for using federal funds for stem cells derived for other purposes...
...those other purposes, however, that will be necessary to develop stem-cell therapies for human use. It's unlikely that the Food and Drug Administration would approve any stem cell therapy that involves transplanting cells or tissues from one patient to another, without addressing the potential of immune rejection - but as our organ transplant history reveals, these challenges remain formidable...
Read "Stem-Cell Research: The Quest Resumes...