Word: biologist
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
...doesn't even happen in amphibians, those wondrously regenerative little creatures, some of which can regrow a cut-off limb or tail. Try to grow an organism from a frog cell, and what do you get? You get, to quote biologist Colin Stewart, "embryos rather ignominiously dying (croaking!) around the tadpole stage...
...also easy to imagine the technology being misused, and as news from Roslin spread, apocalyptic scenarios proliferated. Journalists wrote seriously about the possibility of virgin births, resurrecting the dead and women giving birth to themselves. On the front page of the New York Times, a cell biologist from Washington University in St. Louis, Missouri, named Ursula Goodenough quipped that if cloning were perfected, "there'd be no need...
...group of molecules called chemokines, which may one day be used to shield cells from HIV. Other scientists, including Ho, are intensifying their search for a vaccine. Two weeks ago, the nih increased its budget for AIDS-vaccine research 18%--to $129 million--and named Nobel-prizewinning molecular biologist David Baltimore to head the effort...
Since telomerase keeps these tenacious cells going, is it reasonable to assume that the same enzyme could be used artificially to help mortal cells--and the body itself--exceed their programmed life-span? At Geron Corp., a San Francisco-based biomedical firm, biologist Calvin Harley is trying to find out. Harley, who collaborated with Greider on her later telomere work, is looking for the genes that direct telomerase production, believing he might be able to manipulate them so that the spigot for the enzyme can be turned on and off at will. "I think we are going to see fundamental...
...time being, therefore, many researchers are shifting their focus to goals that are more achievable. If the genes responsible for regulating senescence can't yet be manipulated, they wonder, is it possible to directly treat parts of the body they affect? Jerry Shay, a biologist specializing in cancer research at the University of Texas Southwestern Medical Center in Dallas, does not rule it out. Instead of engineering genes, he says, "we might be able to squirt some chemical to trigger telomerase at a particular site. The enzyme would turn on for a few weeks, change the expression of cells...