Word: sheeps
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Dates: during 1990-1999
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BEAVERTON, Ore.: The science of cloning climbed a little higher on the evolutionary tree with the announcement that scientists at the Oregon Regional Primate Research Center in Beaverton have successfully cloned a rhesus monkey. Unlike Dolly, the wonder sheep who was cloned from an adult animal, the monkeys were duplicated at the embryonic stage, a less dramatic breakthrough. But the success in cloning a primate has researchers salivating. "What we want to do is establish an immortal cell line, something like an embryonic stem cell line, where you can produce literally unlimited numbers of these things," Donald Wolf, a senior...
...announcement which has left both the scientific and ethical communities aghast, a researcher working for a private company in Edinburgh, Scotland, has apparently created the first successful clone of an adult mammal--a ewe, genetically identical to a six-year-old adult sheep...
Wilmut said Dolly, a seven-month-old ewe, was created by fusing a cell from an adult sheep with an egg from a different sheep. Because the DNA of the egg cell was removed, the DNA of the adult cell directed the subsequent growth and development...
...carrying the adult DNA was placed into a third sheep for gestation until Dolly, whose hereditary information is identical to the adult, was born...
...would be ethically unacceptable, and certainly would not want to be involved in the project." Meanwhile, President Clinton provided a typically Beltway response: He asked for a commission to review the implications. Wilmut and his colleagues at the Roslyn Institute in Edinburgh, Scotland, will publish a report on the sheep cloning Thursday in the journal Nature. Previously, scientists had cloned less complex life forms, like tadpoles, but the tadpoles had never developed into frogs. In the sheep experiment, tissue was taken from the ewe's udder and cultivated in a lab, using a process that rendered the cells essentially dormant...