RNA plays a central role in biology, but there is still much to learn about the molecule’s life cycle in the cell. In recent years, scientists have devised methods that can take snapshots of messenger RNAs (mRNAs) scattered across a cell and measure the ebb and flow of their abundance, but they haven’t yet been able to track the individual movements of a large number of them over time.
New method tracks gene expression in single cells over space and time
