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Science News for December 26, 1997


MIT Biologists Identify Aging Mechanism

Researchers discovered a simple mechanism of aging in yeast cells, where extrachromosomal ribosomal DNA (ERCs) replicates until the cell dies. ERCs' accumulation causes enlargement and fragmentation of the nucleolus, leading to cell death, suggesting a potential target for intervening aging processes.

SourceMassachusetts Institute of Technology·JournalCell·DateDec 26, 1997