Word: viral
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...recent preliminary diagnosis by hematologists at Boston Children's Hospital indicates that Hackett has a rare blood ailment which severely limits his ability to recover quickly from viral infections. The disorder raises serious questions as to whether the distance ace can possibly be in top form this weekend...
Arber, 49, first postulated the existence of restriction enzymes in the early 1960s while studying viruses that invade bacteria. After labeling a virus with a radioactive isotope that acted as a tracer, Arber found that when the virus entered a bacterium, most of the viral DNA was destroyed...
Arber theorized that the bacterium produced a "restriction" enzyme that cut the viral DNA into smaller pieces (the host bacterium's DNA is protected from its own chemical scissors by other enzymes). Arber further proposed that the enzymes recognized and acted upon specific sites along the DNA strand...
...causes tumors in mice but not in humans) into a specially engineered strain of the common bacteria Escherichia coli. The bacteria will be fed to or injected into mice and hamsters, which will then be examined to determine 1) if the bacteria multiply into progeny that also contain the viral DNA, and 2) if the bacteria-carried viral DNA can cause tumors in the animals...
Also immobilized by the viral onslaught was the U.S. Naval Academy at Annapolis, Md., where 3,000 or more of the 4,300 midshipmen were confined to their rooms and dosed with aspirin and cough medicine. Actually, it appears that the U.S. Military Academy at West Point, N.Y., had been hit by an earlier outbreak but this was not publicized. Before the end of January, 200 to 300 cadets were reporting to sick call daily at West Point. That epidemic has passed its peak but has spread across the Hudson to Vassar. Says Dr. Rita Jaeger, health director...