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...Scientists believe that embryonic stem cells are more versatile than adult cells in generating the more than 200 different tissue types in the body. The need for healthy new cells is particularly acute in the case of spinal-cord injury, because once central-nervous-system tissue is destroyed, it does not regenerate - not in any significant way, at least. The Geron team began its work with what is known as a presidential stem-cell line - stem cells derived from discarded in vitro-fertilization embryos that already existed in 2001 when then President Bush decided to prohibit the use of federal...
...version GRNOPC1. By having more of these cells around the spinal cord, more nerves might be repaired and can then potentially re-establish proper connections. Simply by working with the GRNOPC1 cells, Geron scientists have learned more about how they operate, which will expand their understanding of how the central nervous system might be healed. Says Geron's president and CEO, Dr. Thomas Okarma: "They make dozens of factors that can stimulate nerve function, growth and regeneration." (Read "Scientists Reach Stem-Cell Milestone...
...debt. (Beijing sold $9.2 billion of long-term U.S. Treasuries in November but bought $38.2 billion of short-term government notes.) Indeed, part of the reason short-term interest rates are so low in the U.S., as Council on Foreign Relations economist Brad Setser notes, is that foreign central banks - including China's - are doing the same thing private investors have been doing: pouring funds into short-term, highly liquid, dollar-based assets. If China reversed course and pulled money out of the U.S. in a big way, it would ravage the value of its own portfolio, which is still...
...well as their Year of the Rat predecessors. Even worse, the meteorological bureau predicts that the days on which the lunar New Year celebrations will fall may be some of the coldest in recent Shanghai memory - a bone-chilling 15.8 degrees in a city where most homes lack central heating. (See pictures of the global financial crisis...
...Visitors who make a minimum $50 donation to the school will have their names carved - like recent visitor Donna Karan's - on one of 2,630 bamboo poles used to construct Heart of School, a central library and meeting facility. At 60 ft. tall (18 m), it will be one of the world's largest all-bamboo buildings when completed in March...