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After nearly a decade of setbacks and false starts, stem-cell science finally seems to be hitting its stride. Just a year after Japanese scientists first reported that they had generated stem cells by reprogramming adult skin cells - without using embryos - American researchers have managed to use that groundbreaking technique to achieve another scientific milestone. They created the first nerve cells from reprogrammed stem cells - an important demonstration of the potential power of stem-cell-based treatments to cure disease...
...first described by Japanese biologist Shinya Yamanaka, who, in 2007, showed that the introduction of four genes into an adult human skin cell could reprogram it back to an embryonic state (Yamanaka had reported the same achievement in mice the previous year). Like embryonic stem cells, these reprogrammed adult cells could be coaxed into becoming any other type of cell - from skin to nerve to muscle. But researchers questioned whether the new stem cells would behave as predictably or as safely as embryonic stem cells, or whether iPS would consistently yield usable cells. "Our work shows that the original method...
...fall, the building will also offer reading and writing help, an adult lecture series, and computer-focused workforce development programs, according to Harvard’s Project Manager for Neighborhood Planning Mary Helen Black...
...virtue of where they come from; it's simply that the nice, middle-class Mexican population isn't that eager to come here." (The proportion of immigrants in U.S. jails is heavily disputed: a Public Policy Institute of California report found earlier this year that while 35% of adult Californians were born outside the U.S., only 17% of the state's adult prison population can make that same claim...
Comic-Con audiences sank their fangs into two hotly anticipated vampire projects Thursday, as the makers of Twilight, the movie inspired by Stephenie Meyer's best-selling young adult novels, and True Blood, the new HBO show adapted from the Southern Vampire Mysteries books by Charlaine Harris, showed footage, fielded questions from expectant, sometimes hysterical fans and tackled the enduring appeal of the undead...