Word: embryos
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
Scientists at Advanced Cell Technology in Worcester, Mass., took a skin cell from Cow A, cloned it (by injecting the nucleus into a cow egg whose nucleus had been removed), then implanted the embryo in the uterus of Cow B. That embryo clone grew into a fetus, which, had it been born, would have been Cow C. But it was not born. The fetus was removed from the uterus and harvested for its tissues. These tissues from the clone were then put back into the original Cow A. Lo and behold, it worked. These cells from the clone were...
...cloning advocates. We would never countenance such work in humans, they say. Cows, yes, but we would never implant a cloned human embryo in the uterus of a woman and grow it to the stage of a fetus. We solemnly promise to grow human clones only to the blastocyst stage, a tiny 8-day-old cell mass no larger than the period at the end of this sentence, so that we can extract stem cells and cure diseases that way. Nothing more. No fetuses. No implantation. No brave new world of fetal farming...
...Advanced Cell Technology cow experiment suggests the obvious short circuit that circumvents this entire Rube Goldberg process: let the cloned embryo grow into a fetus. Nature will then create within the fetus the needed neurons, kidney cells, liver cells, etc., in far more usable, more perfect and more easily available form...
...report last week, quoting controversial Italian doctor Severino Antinori as saying that he had impregnated a woman with a cloned a human embryo, thankfully appears to be false. But while most in the scientific community doubt that any scientists have yet cloned humans, the very prospect lends new urgency to the cloning debate. This heightened awareness comes just as President Bush and the House are encouraging a divided Senate to pass a ban on all cloning research...
...create stem cells—is ethically acceptable. The possibilities for stem cells derived from therapeutic cloning are immense. Great gains might be made in treating multiple sclerosis, Alzheimer’s and various other crippling diseases. And because it will never result in the birth of a cloned embryo, therapeutic cloning is free from many of the ethical dilemmas confronting reproductive cloning...