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{{B}} Weight-Loss Nirvana
A Substance That Makes Fat Mice Thin Just Might Work for Humans Too{{/B}}
In the US, where one in three adults is seriously overweight, the news carried by the journal Science last week -- that Friedman and his colleagues at the Howard Hughes Medical Institute and New York City’s Rockefeller University had discovered a magical dose that melts fat in a matter of weeks -- resonated with unusual force. Momentarily, at least, it encouraged the spirits of millions of lifelong dieters and boosted the stock of Amgen, the biotechnical firm based in California that holds the license on the underlying technology. It is too early to predict, however, whether this rare elixir (called leptin, after the Greek leptos, meaning slender) will be a stunning pharmaceutical (制药上的) success or just another "miracle" cure that never pans out. Even if all goes well, it could be five t

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