Word: harmlessness
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Dates: during 1990-1999
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...deposit their genetic material into the cell nucleus. Researchers have learned how to strip the viruses of their reproductive genes, insert into the viral DNA the beneficial gene they want to deliver, and then let the virus infect a patient's cells. The virus inserts its own now harmless genes, as well as the beneficial one, into the cellular DNA. If all goes well and the gene "expresses" itself, the cell begins producing the needed protein...
...possible solution is to engineer genetically a harmless hybrid virus that contains some, but not all, of HIV's hereditary information. Scientists are now focusing their efforts on the canary pox virus, which causes a rash in birds but not in people. By introducing a few HIV genes into the canary pox virus, the researchers hope to create a new microbe that looks sufficiently like HIV that it will prime the body's defenses against the more serious threat. In early trials of vaccine preparations that include the canary pox agent, half the human subjects appear to be producing...
Members of the bomb squad arrived and found the bag to be harmless...
With the community on heightened alert after Saturday's bombing of Centennial Olympic Park in Atlanta, local authorities were called in to investigate two suspicious bags over the weekend, both of which turned out to be harmless...
...know that the mentally ill--paranoid schizophrenics, for example--hear menacing voices speaking from unlikely sources (harmless strangers, inanimate objects), or they read malignant meanings into random events, or they think the very furniture will rise up and murder them. Horrors like Flight 800 tend to nudge the sanest minds into the demoralized routines of paranoids. They grow jumpy, irrational. Such familiar rituals as air travel turn sinister...