Word: extraction
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Dates: during 1990-1999
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...years of research and cost up to $300 million. But initial screening can now be done in a matter of days without using animals. Molecular biologists are able to isolate enzymes that can trigger human diseases, then expose those enzymes to a plant's chemical compounds. If a plant extract blocks the action of a particular enzyme--say, one that promotes a skin inflammation--they know the plant has drug potential. By extracting specific chemicals from the leaves, roots or bark with a series of solvents and testing each sample individually, scientists can determine which of the plant's thousands...
...cure for hepatitis. Cox quickly found that he could not just casually go into the forest and gather the bark because 1) there are two varieties of the tree, and the bark of only one is effective, and 2) only trees of a certain size produce the desired extract...
...your basic lab experiment, akin to those bubbling in high school chemistry labs every week. In this case, the goal was to determine whether plant samples from the Ecuadorian rain forest contained chemical properties that could be used to combat diabetes. Immerse the leaves in an alcohol extract, then a water extract, and see what happens...
...unreliable, if amusing, collection of essays on certain classes. These essays are no more than one student's opinion, and that student probably has as much in common with you as Adam. The latter seems more reliable, but typically relies on pitiably small samples from which one can extract little conclusive evidence. It gives two important pieces of information (class size and reading list) but both are easily discernible during shopping period...
RAMALLAH, West Bank: Four days of Middle East shuttling by special envoy Dennis Ross has left Yasser Arafat emptyhanded - and spitting mad. All Ross was able to extract from Netanyahu was today's lifting of another travel ban. Says TIME's State Department correspondent Dean Fischer: "It's not much of a concession...