Word: strains
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Dates: during 1970-1979
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...lurking in the monkey kidneys may slip into the vaccine with unpredictable effects on the human recipient. One stray monkey virus has turned up in some vaccine samples. Many virologists believe that it would be better to make the vaccine from viruses grown in human cells, specifically in a strain developed by Dr. Leonard Hayflick and Dr. Paul S. Moorhead. Originally derived from the lung tissue of a Swedish aborted fetus, this strain is pure, will reproduce itself 50 times and allows a huge yield of cellular material. Britain already uses polio vaccine produced in these cells, and the U.S.S.R...
Inevitably, the ethics of amateur skiing have been altered by the strain of the sponsors' competition. In the 1950s, Austrian Ski Star Toni Sailer supposedly earned a modest $1,200 a year from advertising. Eventually he dropped out of competition after the International Ski Federation investigated his role in Sailer-Tex, an Italian textile firm to which he had lent his name. "I hoped that my leaving would be understood as a protest against the hypocrisy of the so-called amateur status," Sailer said recently. "But the situation has only become worse...
Though prospects for solid economic advances for the rest of this year remain good, a strain of uncertainty in recent weeks has brought a slight dip in earlier forecasts. The main cause: the Government's downward revision of last year's estimated gross national product, which fell $4 billion below expectations, to $1,047 billion. Besides lowering the base from which 1972 starts, the revision also automatically shaves down the anticipated totals for this year by lifting the economy off into the new year on a less sharp curve than expected...
...real economic issue this election year will be the unemployment issue. While nearly every other indicator of economic well-being continues to improve, a stubborn strain of joblessness hangs on like a debilitating flu. President Nixon declared last week that unemployment remains the economy's "great problem," and he vowed to reduce it "significantly" this year. He is trying a number of remedies, but because of big and basic changes in the labor force and a reluctance to act decisively against unemployment until recently, these may bring little more than mild relief...
...opponents of the death penalty can cite ample horrors to justify their positions. Even the cleanest execution-and an appalling number are not-is so revolting to see that witnesses commonly vomit and faint. Electrocution is relatively swift, though the victim's flesh sometimes burns while his eyes strain out of their sockets. With cyanide and the rope, it sometimes takes five minutes for the dying man to fall totally unconscious, and usually 15 minutes before he is pronounced dead...