New strategies expand the genetic toolkit for transgene expression, lineage tracing and mosaic analysis of gene function in flies and mammalian cells. Body tissues comprise many different cells that ...

Bitterly cold arctic air has blanketed parts of the United States over the last week, with some areas getting snow and subzero temperatures. Along with the cold weather comes a natural event called ...

Hope is always made more real when we see tangible action today that points with credibility to the possibility of a better tomorrow. In the darkest days of the Babylonian siege of Jerusalem, Jeremiah ...

Expression systems are genetic constructs (a gene encoded by DNA) that are designed to produce a protein, or an RNA (ribonucleic acid), either inside or outside a cell. Expression systems are used in ...

Freedom of speech is a bellwether: how any society tolerates those with minority, disfavored, or even obnoxious views will often speak to its performance on human rights more generally. In ...