Word: celling
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Dates: during 1990-1999
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...game Sonic the Hedgehog) determines the fate of neurons in the spinal cord and the brain. Like a strong scent carried by the wind, the protein encoded by the hedgehog gene (so called because in its absence, fruit-fly embryos sprout a coat of prickles) diffuses outward from the cells that produce it, becoming fainter and fainter. Columbia University neurobiologist Thomas Jessell has found that it takes middling concentrations of this potent morphing factor to produce a motor neuron and lower concentrations to make an interneuron (a cell that relays signals to other neurons, instead of to muscle fibers...
...recent finding has intrigued researchers more than the results reported in October by Corey Goodman and his Berkeley colleagues. In studying a deceptively simple problem--how axons from motor neurons in the fly's central nerve cord establish connections with muscle cells in its limbs--the Berkeley researchers made an unexpected discovery. They knew there was a gene that keeps bundles of axons together as they race toward their muscle-cell targets. What they discovered was that the electrical activity produced by neurons inhibited this gene, dramatically increasing the number of connections the axons made. Even more intriguing, the signals...
...than-expected results by knocking out samples of all major flu types in five different species of lab animals, according to a report in the latest issue of the Journal of the American Chemical Society. GS 4104 contains the infection by preventing newly-formed viruses from leaving the host cell. But don't expect to be able to take a pill to get rid of the flu anytime soon. Human trials are planned for later this year, with results expected in two or three years at the earliest. Even if those trials are successful, the main use of an anti...
...problem with cell-phone users is that they often start conversations in places where there are no ushers available--in the passenger waiting-area before a plane is ready for boarding, for instance, where they're sitting 10 ft. from a pay phone that is one-fiftieth of the cost and doesn't make their conversation vulnerable to being taped by John and Alice Martin of Fort White, Florida, and published in the New York Times...
...investigation must now track several apparent leads. The police have not confirmed newspaper reports that the female witness was the person that Ennis called from a cell phone at 1:15 a.m. for help illuminating the area with the headlights of her car, the better to fix his flat. According to those stories, the witness supposedly left the scene because she saw a man with a pistol, who tapped on her car window. She then returned and found Ennis dead on the pavement next to his Mercedes. She supposedly saw a car fleeing but could not identify the make...