Word: infection
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Dates: during 1980-1989
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Some viruses consist of a segment of double-stranded DNA surrounded by a protein skin. When they invade a cell, the DNA takes over the cell's genetic machinery and orders it to produce copies of the virus, which escape to infect other cells. The victim cell is often killed in the process. But the AIDS virus is a so-called retrovirus and contains single-stranded RNA. Alone, RNA lacks the ability to conquer cells, but retroviruses carry an enzyme called reverse transcriptase. When the AIDS virus invades an immune-system T cell, the enzyme enables the viral...
...regular three-month intervals. This study, begun before scientists had discovered HTLV-III, was originally designed to determine the cause of AIDS. Although they have not yet formulated any conclusions, Hirsch says they will continue to study cofactors, placing special emphasis on the herpes group viruses which often infect AIDS patients...
AIDS viruses which don't have the art-gene, as the new gene is called, cannot reproduce or infect other cells. Therefore, if doctors can find drugs which interfere with the workings of the art-gene, they may be able to control or cure the disease, said Associate Professor of Pathology William Haseltine, who led the research team...
While there remains no cure for AIDS, agency officials said, research over the past year shows that virtually all people in high-risk groups who repeatedly test positive to the blood test can infect others...
...intent to murder. The weapon: saliva. Authorities said that Autoworker John C. Richards, 28, scuffled with four Flint, Mich., police officers when they arrested him for drunk driving on Dec. 6. The officers said that Richards became enraged, told them he had AIDS, warned that he was going to infect them and then spat at them. Richards was ordered last week to undergo psychiatric testing...