Word: molecular
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Dates: during 1970-1979
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...available. Instead, they experimented with insulin genes from rats. Placing this foreign DNA inside enfeebled E. coli, they were delighted to find that the genetic material was replicated every time the bacteria divided. But the scientists do not yet know whether the rat genes -in the language of molecular biology -actually expressed themselves, that is, produced insulin...
Like a chant throughout the book, Grace, in her methodical analytical way states, "We all remember what we need to remember." Even empirical evidence--"Give me the molecular structure of the protein which defined Charlotte Douglas," she demands at the book's beginning--is subject to the internal mechanism in each person which attempts to make life more palatable, spoon-feeding it to us bit by bit, memory by memory. The repeated staccato phrases throughout A Book of Common Prayer, like the responsive readings in a hymn book, form the kernels of the emerging past for Charlotte. Like a slightly...
...fluid of cows and serum from fetal calves. In effect, the formula fooled the parasite into acting as if it were in a natural host. Yet trypanosomes are exasperatingly fickle creatures. After they invade humans or cattle, they show a chameleon-like ability to change their protein coatings, whose molecular structure serves as a precise signal to the host's immune system for the production of specific antibodies against the invaders. As the immune system begins mustering appropriately shaped antibodies against the trypanosomes, the parasites change their coats and force the immune system to mount a new counterattack. This...
...Newspapers, which had until then paid scant attention to the story of recombinant DNA, erupted with scare headlines, alarming the nation with exaggerated doomsday prophecies. Two months later, Ted Kennedy held his first hearings on the new genetics. Some scientists, joined by politicians, began questioning whether the molecular biologists should do their own policing. Said one: "This is probably the first time in history that the incendiaries formed their own fire brigade...
...along with the impending federal legislation, which is expected to impose restraints on all researchers-including those at previously unregulated industry labs. Still, scientists remain concerned over any political controls on their work. At last week's Senate hearing, these fears were voiced by Norton Zinder, a molecular geneticist at Rockefeller University. Said he: "We are moving into a precedent-making area -the regulation of an area of scientific research-and I must plead that this be done with extreme care and without haste. The record of past attempts of authoritative bodies, either church or state, to control intellectual...