Word: developement
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Dates: during 1970-1979
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Hans Steinke conducted their experiments with cotton-topped marmosets, South American monkeys that are known to develop lymphoma, a cancer of the lymphatic system, when they are exposed to two viruses of the herpes family. The researchers reported in the British journal Nature that they inoculated 42 of the animals with a vaccine made from killed herpes saimiri viruses, then exposed some of the immunized animals and controls to live, cell-free viruses. Most of the non-immunized monkeys developed malignant lymphoma and died of the disease. The immunized animals remained healthy...
Even if it is proved that viruses cause human cancer, cautions Spiegelman, it may be years before science can develop a safe, successful vaccine against them. But identification of cancer viruses is likely to produce a payoff long before vaccines become practical. Spiegelman believes that the presence of viral particles, which are unique to each type of cancer, may provide doctors with effective methods of detecting cancer in its earliest stages-well before it can be diagnosed by X rays and more conventional methods. That development by itself could save many of the Americans who die of cancer every year...
Repulsive Charges. To meet that deadline, U.S. scientists, starting with a technique devised in the Soviet Union, will have to develop an almost entirely new technology. Unlike nuclear fission -the splitting of a heavy atom into two lighter ones-fusion occurs when two light atoms collide and merge into a heavier one. The reaction releases considerably more energy than fission. Starting the chain reaction that causes fission (Abomb) explosions and powers today's nuclear reactors is relatively easy; basically, all that is required is the bringing together of enough fissionable uranium or plutonium in the right shape. The neutrons...
...current inflation rate has destroyed the lives of many men and, if it continues, a situation could develop where a more controlled economy might be appealing," he said...
...will take more than Walzer's tremendous ability to manipulate thetoric to develop a convincing argument that the liberal position in the Middle East involves a U.S. presence there. The argument that peace in the Middle East is contingent upon the present of U.S. forces there reminds me all too well of the arguments used to support the United States involvement in Vietnam. Incidentally, in the case of Vietnam. Walzer's stance was one of opposition to U.S. involvement. He now argues that "both the United States and the Soviet Union must maintain military presence in the Middle East...