Word: rhesus
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Dates: during 1990-1999
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BEAVERTON, Ore.: The science of cloning climbed a little higher on the evolutionary tree with the announcement that scientists at the Oregon Regional Primate Research Center in Beaverton have successfully cloned a rhesus monkey. Unlike Dolly, the wonder sheep who was cloned from an adult animal, the monkeys were duplicated at the embryonic stage, a less dramatic breakthrough. But the success in cloning a primate has researchers salivating. "What we want to do is establish an immortal cell line, something like an embryonic stem cell line, where you can produce literally unlimited numbers of these things," Donald Wolf, a senior...
...less live longer. But a new study may show that primates -- perhaps even people -- also live longer, healthier lives if they consume fewer calories per day. The theory is that lowering calories resets the body's metabolism so that it operates more efficiently. A 10-year study of rhesus and squirrel monkeys found that the underfed animals have lower blood pressure and better cholesterol. Perhaps the most striking finding: underfed animals look as though they will be protected from heart disease. Their levels of high-density lipoprotein -- the good cholesterol that helps keep blood flowing smoothly through the arteries...
...less live longer. But a new study may show that primates -- perhaps even people -- also live longer, healthier lives if they consume fewer calories per day. The theory is that lowering calories resets the body's metabolism so that it operates more efficiently. A 10-year study of rhesus and squirrel monkeys found that the underfed animals have lower blood pressure and better cholesterol. Perhaps the most striking finding: underfed animals look as though they will be protected from heart disease. Their levels of high-density lipoprotein -- the good cholesterol that helps keep blood flowing smoothly through the arteries...
...human life produces oxygen radicals, unstable compounds that when combined with just about anything, have toxic effects on cells. Add to that the weakening over time of the immune system, which leads the body's fight against disease, and decline is inevitable. Biologists are now experimenting on rats and rhesus monkeys to see if restricting the intake of calories (while maintaining healthy nutrient levels) will slow the metabolic rate, producing a lower body temperature that in turn will decrease oxygen consumption. A lower rate of metabolism equals fewer radicals equals longer life...
...more about the health hazards of anal sex than oral. Everybody knows, after all, that it's much easier for the virus that causes AIDS to cross the lining of the rectum than to infect someone through the mouth. Or is it? The surprising results of a study on rhesus monkeys published last week in Science not only suggest otherwise but also underscore how little scientists know about how, at the microscopic level, HIV spreads from one person to the next...