Scientists at Weill Cornell Medicine have discovered that the nucleolus, long known for its role in protein production, functions as a biological timer that could determine cellular lifespan.

Their research focuses on the nucleolus, a microscopic structure within ... While scientists have long known about its involvement in protein production, this new research reveals its unexpected ...

The nucleolus isolates the rDNA which encodes the RNA portions of the ribosomes, the protein-building machinery. The rDNA is one of the most fragile parts of the genome, due to its repetitive ...