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 ...

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 ...

Joshua Tree National Park is often described as an out-of-this-world experience or healing for one’s soul, says Donovan Smith, the park’s public information officer. “With blue sunny skies almost year ...

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 ...