Word: mammalian
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Dates: during 2000-2009
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Ultimately, however, the only way to make flu-vaccine supplies more reliable may be to get rid of the chicken eggs. Several companies are studying methods of growing the virus in mammalian-cell cultures, and at least one biotech company is experimenting with using genetic-engineering techniques to streamline the process even further. But this kind of research takes a lot of resources and may lead to vaccines that are even more expensive to produce. In any event, the newer production techniques probably wouldn't be available for at least a decade...
...mice didn't exercise. And as the animals aged, their muscles remained strong, as vigorous as if they belonged to far younger mice. In the coming months, Sweeney plans to inject IGF-1 into dogs to learn more about how the added growth factor would operate in a larger, mammalian body that more closely resembles that of humans...
...past 25 million years. Archer warns that if humans don't stop abusing the earth and "incarcerating our precious biotas in reserves that are demonstrably too small to sustain them," we could jeopardize our survival as a species. Alarmist? Keep in mind, he suggests, that the average mammalian species hangs around for 5 million years; Homo sapiens has been around for some 300,000 years. "We haven't been tested...
...1930s. "What we're saying," says Archer, "is, 'O.K., we failed that one. Let's learn from the thylacine. Don't take (the platypus) for granted, because if you push it, it's likely to vanish.'" But the threat is much broader than that. In Australia, 44% of distinct mammalian groups have disappeared during the last 23 million years. Only a tiny fraction of that is man's fault: cosmic and natural forces (meteorites, volcanic eruptions, climatic changes) are adept at causing extinctions on their own. Nonetheless, Archer argues, the planet is on the cusp of another great extinction event...
Tilghman joined the faculty of Princeton University in 1986 and currently serves as the university’s president. An expert in the field of molecular biology, she participated in the first cloning of a mammalian gene...