Stressed out

Israeli researchers have published findings in mice that shed light on stress reactions in people, and may help to explain the puzzling reactionsin military personnel described after the Gulf War.

Reporting in Nature, researchers from Hebrew University (Jerusalem) and colleagues described molecular mechanisms involved in the brain's reaction to stress in a mouse model. They showed that changes in gene expression occur after an increase in activity at a type of receptor for the neurotransmitter acetylcholine...