Word: embryos
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
...revert to the virtual equivalent of its embryonic state, in which it has the potential to grow into any kind of tissue. The finding was a promising first step toward the creation of stem-cell lines for near-miraculous medical treatments-and because Yamanaka did not use human embryos, his technique offered researchers everywhere a way to sidestep the ethical controversies that have dogged the field since its birth. But it was March 2006, just months after the South Korean stem-cell scientist Hwang Woo Suk-who had become an international sensation after claiming to have cloned a human embryo...
Eggan's group has found, astonishingly, that one-celled zygotes, or fertilized embryos that are on the verge of making their first cell division, can act just like the emptied-out egg in the nuclear transfer process. And because more of these zygotes are available than eggs, it may give patients another way of obtaining customized stem cells. In fact, notes Eggan, there may be even more such zygotes available if you count the abnormally fertilized embryos that IVF clinicians discard immediately. Anywhere from 3% to 10% of IVF embryos get either too many or too few chromosomes when they...
...second Republican debate, on May 15, Romney tried repositioning his earlier pro-choice views as a mass of quivering equivocation. He claimed he was always "personally pro-life." Then, as Governor of Massachusetts, dealing with issues such as "embryo farming," he changed his mind and decided that Roe v. Wade "cheapened the value of human life...
...embryo farming" an actual issue in Massachusetts while Romney was Governor? Well, maybe. Romney's problem is that flip-flops use up a lot of stored credit and goodwill, and he has been to that storage closet too often lately on other matters, such as gun control...
...adapt to a new world. Jamestown did not invent America, but in its will to survive, its quest for democracy, its exploitation of both Indians and slaves, it created the template for so many of the struggles--and achievements--that have made us who we are. It contained in embryo the same contradictions that still resonate in America today--the tension between freedom and authority, between public purpose and private initiative, between our hopes and our fears...