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Science 30 January 1998:
Vol. 279. no. 5351, p. 635
DOI: 10.1126/science.279.5351.635b
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Letters

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This Week's Letters

Counting sheep

Questions are raised about whether the cloning of the sheep Dolly, an exceptional "single observation," has been adequately confirmed. Dolly's cloners respond. The schedule for the startup of a reactor at Brookhaven National Laboratory is explained. And more discussion of how to regulate mercury in fish is offered.

Letters in This Issue

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[Letter] Dolly Confirmation
Vittorio Sgaramella, Norton D. Zinder; Keith H. S. Campbell, Alan Colman, and Ian Wilmut
[Letter] Reactor Startup
John Stringer; Andrew Lawler
[Letter] Methylmercury Risks
Pál Weihe, Philippe Grandjean; Lynn R. Goldman, William H. Farland; Grace M. Egeland, John P. Middaugh


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