Word: prevented
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Dates: during 1960-1969
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...reaching effects. The polyoma virus, which produces a variety of cancers in many animals, is almost identical in size and complexity to Phi X 174. "If one can take the polyoma DNA and modify it in the test tube by implanting alternate genes," says Kornberg, "some of these could prevent the growth of cancer cells...
Wirtz, Treasury Secretary Henry Fowler, Agriculture Secretary Orville Freeman and Poverty Boss Sargent Shriver are said to be anxious to leave the Government or to change jobs-though all may temporarily stay put now that Mc-Namara is leaving, simply to prevent the kind of revolving-door exodus that could hurt Lyndon Johnson in an election year...
...piles of carcasses to massive graves, and the pyres of burning animals nightly throw their smoke into the Shropshire sky. Soldiers and airmen have sprayed thousands of gallons of disinfectant on farms not yet hit by the plague, and at the border between infected and "clean" areas police prevent animals from crossing roads and carefully spray the tires of all passing vehicles in hopes of containing the epidemic. Horse racing and livestock shows have been canceled throughout the country. Many Britons will have a treeless Christmas because the government has closed down four major tree-producing areas...
...Presidential election will be the first in which a candidate, President Johnson, does not dare campaign in the streets, Moynihan said. An organized effort of intimidation will prevent him from campaigning in a normal manner, he said...
Dyen said last night that he had not expected the SDS challenge to be accepted. He criticized what he called the Administration's view of their "dignity" and "responsibility," which he said would prevent them from debating with students...