Scientists have discovered that tRNAs can determine how long mRNAs exist in a cell, causing some messages to be stabilized ...

Differences in the ribosomal densities of the two daughters produced by a mother Escherichia coli could explain the asymmetry of aging and growth rate in previously reported such daughter pairs.

Ribosomes are the sites in a cell in which protein synthesis takes place. Cells have many ribosomes, and the exact number depends on how active a particular cell is in synthesizing proteins.