Anxiety is often described as a whole‑brain problem, but a series of mouse experiments suggests that, in some cases, a single misfiring circuit can tip the balance between calm and fear. By nudging ...

Scientist Laura Soucek, who removed tumors from rodents almost 20 years ago, invokes the ‘moral duty’ not to generate false ...

Advances in organ and computer models are raising the prospect that some animal experiments could be eliminated. But there ...

When laboratory mice step out of their plastic cages and into real soil, their behavior changes so dramatically that it forces a rethink of what stress, health and even “normal” really mean. The story ...

Lab mice are subjected to countless horrors during their short lives, from being injected with cancerous cells to getting exposed to microplastics or ending up dosed with cocaine. It’s a controversial ...

Researchers discovered why bird flu can survive temperatures that stop human flu in its tracks. A key gene, PB1, gives avian viruses the ability to replicate even at fever-level heat. Mice experiments ...

Food poisoning isn’t an experience you’re likely to forget — and now, scientists know why. A study published April 2 in Nature has unraveled neural circuitry in mice that makes food poisoning so ...

A confocal microscopy image of doublecortin-stained newborn neurons (pink) and nuclear stain DAPI (green), which shows that neurogenesis is occurring in the brain of a normal mouse. Scientists at ...