Word: array
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...would have to trigger the production of antibodies that protect the individual against AIDS; most AIDS patients have antibodies that, for some unknown reason, fail to protect them. And in light of the changeability of the AIDS virus, the vaccine would have to offer immunity against an almost infinite array of variant strains. No virus has presented vaccine makers with more formidable challenges. But given the lightning pace of discovery, says Essex, "we will likely know within a year or two whether or not a vaccine will be feasible...
Against this array, the Libyans fired the SA-5s, the Soviets' chief long- range surface-to-air missiles. Weighing about five tons apiece, the 54- ft.- long weapons are designed primarily to engage slow-moving targets like B-52 bombers. But Moscow was doubtless unhappy to note that speedy U.S. fighters could not only outmaneuver the SA-5s but also, evidently, divert them...
...City, the streets of Managua are remarkably safe. Police are courteous, and people feel free to come and go, anywhere, day or night. At government-hosted "Face the People" forums, citizens bellyache about everything from food shortages to the draft without fear of reprisal. Moreover, the country has an array of political parties, church groups and civic organizations from which to choose. In comparison with many East bloc countries, Nicaragua is not the "totalitarian camp" of which President Reagan speaks...
Similar changes in the TV scene, if not arousing quite the same fury, are common sights across Europe these days. Established government-owned -- and frequently dull -- networks are facing a feisty new array of commercial competitors. In Italy the state-owned RAI-TV has been joined by three popular networks run by TV Magnate Silvio Berlusconi, who is also part owner of La Cinq. In West Germany, the government is spending an estimated $10 billion to wire the nation for cable (which is already widespread in countries like Belgium and Holland). German cable viewers can choose from such new channels...
...used to create the image had arrived in California by an unusual route. Looking for ways to view Halley's comet at perihelion, Ames scientists had hit upon the idea of using the Pioneer 12 spacecraft, which has been orbiting Venus since December 1978, surveying the planet with an array of instruments. Around the time of Halley's perihelion, they realized, Venus--and thus Pioneer--would be in position to have a direct view of the comet. Late in December the scientists ordered the spacecraft to pivot 90 degrees and point its ultraviolet scanner at the comet. It has been...