Word: fruited
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Dates: during 1990-1999
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...reveal the precise mechanisms by which those changes are brought about. Neural activity triggers a biochemical cascade that reaches all the way to the nucleus of cells and the coils of DNA that encode specific genes. In fact, two of the genes affected by neural activity in embryonic fruit flies, neurobiologist Corey Goodman and his colleagues at Berkeley reported late last year, are identical to those that other studies have linked to learning and memory. How thrilling, exclaims Goodman, how intellectually satisfying that the snippets of DNA that embryos use to build their brains are the very same ones that...
...instance, that a gene nicknamed "sonic hedgehog" (after the popular video 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...
...JUICE? Preschoolers who guzzle as little as 12 oz. of fruit juice a day tend to be fatter or shorter than their peers. Why? At the expense of more nutritious foods, kids fill up on liquid that's packed with sugars, albeit natural ones...
...residence. The semi-conciliatory announcement follows on the heels of a brisk government rejection Thursday of Guatemala as a negotiator for the rebels at the talks, tentatively scheduled to begin early next week in a Lima church. Already, though, Fujimori's overture-of-sorts has shown signs of bearing fruit: after a 17-day stalemate, the rebels released another hostage early Friday afternoon, anti-terrorism police official Luis Valencia Hirano, who reportedly needed medical treatment...
...already have in hand? The already proven benefits of DHEA hormone therapy are enormously impressive. In human studies, DHEA has been shown to dramatically decrease risk to cardiovascular disease and restore immune balance, thereby decreasing risk to autoimmune disorders. While genetic engineers strive year after year to make fruit flies and worms live longer, real people are using DHEA and achieving very satisfying results. STEPHEN CHERNISKE Santa Barbara, California...