Word: drs
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...serious concern. Multiple pregnancies frequently end in miscarriage or stillbirth, and the risk multiplies with the number of fetuses. While septuplets have been delivered a handful of times, in no case have they all lived more than a few days or weeks. So Hauser, along with the McCaugheys' perinatologists, Drs. Paula Mahone and Karen Drake, patiently explained to the McCaugheys the standard option in such a situation: they could, if they chose, undergo "selective reduction"--a medical euphemism for the aborting of several fetuses so the others would stand a better chance of being born healthy...
...Drs. Yvonne Bryson and Irvin Chen, who led the UCLA study, are convinced he was. His mother was HIV-positive when she gave birth, and blood tests at 19 and 51 days showed that the baby carried the virus too. But when the researchers retested the child at 11 months of age, the virus was gone. That seemed so wildly improbable that the scientists conducted more tests and still found nothing. When they re-analyzed blood from the earlier tests, though, the virus was still there. Could the samples have somehow become tainted with HIV in the testing lab? Such...
...Drs. Ho and Shaw realized that they had a unique opportunity to use powerful drugs to watch the infection in progress by essentially creating a snapshot...
...pivotal discovery came in 1976, when Drs. J. Michael Bishop and Harold Varmus at the University of California, San Francisco, made a startling observation. They saw that a viral gene known to cause cancer in chickens was practically a carbon copy of a normal gene found in animal and human cells. The virus had somehow stolen a perfectly good gene and put it to bad use. This finding helped lead to a general conclusion: cells become cancerous because their normal genetic machinery goes awry. The culprits that initiate the damage can be viruses, radiation, environmental poisons, defective genes inherited from...
...most direct approach is to find a healthy copy of the missing gene and transplant it into the affected cells. That's the strategy Anderson, teaming up with Drs. Michael Blaese and Kenneth Culver at the National Institutes of Health, used in a landmark experiment three years ago. The disease the team targeted was severe combined immunodeficiency (SCID), often called the bubble- boy disease because its most famous victim was encased in a plastic bubble during his short life to protect him from infection. One form of SCID called ADA deficiency is caused by a defect that blocks production...