Word: repairer
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Dates: during 1990-1999
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...renovations will include a complete overhaul of its athletic fields, playground repair and replacement, landscaping improvement and new sidewalk lighting, Barrios said...
...already doing better at preventive medicine and at repairing old bodies--dealing with abdominal fat, atherosclerosis, blood pressure, blood sugar, cataracts and so on. U.S. pharmaceutical companies have nearly two dozen Alzheimer's drugs in the works. In the next century, molecular biologists are likely to tinker with more and more of our genetic machinery, in what may be either mankind's worst folly or the most significant software upgrade of the 21st century. (Caveat emptor, users of version 1.0!) Just last month, biologists announced the discovery of mutations that accumulate in aging mitochondria, which are our cells' batteries; maybe...
...rigid, that its nerve cells, or neurons, could never regenerate themselves. If you nick your finger with a knife, the cut will heal in a few days because your skin has the ability to generate new cells. But when something bad happens to the brain, it doesn't repair itself. Why's that? "The brain is not plastic," says Snyder. "It doesn't make new cells. You are born with more brain cells than you need, and you lose them progressively and get dumber and dumber as you get older--or so went the conventional wisdom...
...kind of blood cells the body needs. The skin and liver have their own stem cells. "Maybe there is a brain stem cell, a mother cell that gives rise to all types of brain cell," Snyder says he wondered. "I wanted to find this cell and harness it to repair injured brains...
TOMORROW: Growing functional patches of heart muscle or coaxing existing heart-muscle cells to repair themselves...