Peering Into 2000
We turned our crystal ball on high to spot fields that may rise to the top
in the first year of the new millennium. Here are Science's picks for areas
to watch in 2000.
Unraveling Alzheimer's.
解决老年性痴呆症
Next year should bring the acid test for the popular but controversial notion
that amyloid plaques cause the mental deterioration of Alzheimer's disease.
This year researchers tentatively identified two enzymes called secretases,
which make particular cuts in a precursor protein
