Word: targetting
(lookup in dictionary)
(lookup stats)
Dates: during 1990-1999
Sort By: most recent first
(reverse)
Sachs said the target is "arbitrary" and "not supported by scientific evidence...
...back. He also spends time with his three wives and children in Afghanistan. Aides say his contact with the world is limited to newspaper and radio reports. Though he has a sat phone, it sits mostly idle: he fears the U.S. would use the signal to target an attack...
...pieces of material imprinted with hundreds of different DNA probes--scientists should be able to identify genetic errors almost as quickly as a supermarket scanner prices a load of groceries. In some systems, the probes use different fluorescent dyes that glow under laser light when they hook up with target genes, allowing sensors to tabulate the results automatically. Genetic researchers are already talking about using "FISH [for fluorescent in-situ hybridization] and chips," as they whimsically call these new tools, to look for any number of genetic characteristics, including the more elusive web of genes that may lurk behind familial...
Finding a likely target, of course, doesn't guarantee success. Consider colon cancer: scientists believe at least three things have to go wrong for colon cancers to form. They liken the situation to a car accident. One of the genes that tells cells to divide (the accelerator) must get stuck in the "on" position. Another gene that tells cells to slow down (the brake) must be disabled. And the molecules that fix any mistakes in the DNA code (the repair crew) have to go on strike. In half of all colon cancers, the accelerator is a gene called ras, which...
...Oliff, head of cancer research at Merck. "We were on the verge of abandoning the project." Then Oliff's team realized something critical: the ras protein can't do its job until it has been activated by another enzyme called a farnesyl transferase. Maybe that would make a better target? Early word is that it does, but Merck won't publish the findings from its first human trials until sometime next year...