Word: whites
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Dates: during 1990-1999
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Different kinds of blood cells, red and white, come from a single kind of stem cell in bone marrow. These chameleon-like stem cells transform themselves into whatever 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...
Scientists are also focusing on the differences between two types of fat cells, known as brown and white. The former, active in young mammals (including humans), convert fat into heat rather than storing it. That's crucial in newborns, whose temperature-regulation systems aren't fully formed. As we age, the brown cells become inactive and the white, which convert dietary fat to body fat, take over. Several research teams have found that by reactivating the brown cells in an adult animal with medication, they can burn off fat dramatically. Now the doctors are looking for a genetic switch that...
...northwest of Beijing. Like most Chinese peasants of that era, Zhenbing's parents were too poor to buy coal. Instead, in a climate like Boston's, where winter temperatures often plunged below zero, they burned dried leaves to heat their mud hut. Their home's inside walls were often white with frost from November to April...
...peak. Alex, Conrad and I were the first who had gone to the trouble to climb it, and the view from the top was ample reward. Countless other rock towers, equally strange and beautiful, rise from the ice in all directions, resembling gargantuan sailboats plying a chalk-white...
...protein that's present no matter what strain is involved--then it is possible that by 2025 or so, children could be getting a universal cold vaccine. And then they will have to listen to us old geezers reminisce about the days when we used to carry a small white cloth called a handkerchief...