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The unexpected return of Mr Mikhail Gorbachev is heartily to be welcomed, even if his spell in Moscow will be relatively brief. But the rest of us have things to do as well.
The Environmental Protection Agency is evaluating data from the past decade that suggest dioxin's toxicity may be overestimated. A risk assessment model based on biological mechanism is being drawn up.
A new substrate for the growth of anchorage-dependent cells and a closed perfusion chamber that provides the right environment for making single-cell fluorescence measurements — new tools and tips for cell and tissue culture.
