A new study shows that a group of neurons, previously thought to die in the course of development, in fact become incorporated into the brain’s cortex. This research has implications for understanding—and possibly treating—several brain disorders.

Scientists have found a new way to trawl blood samples for snippets of RNA released by tumors or diseased organs. The method might eventually help doctors diagnose and track a wide range of medical conditions.

Scientists studying worms have discovered a group of cells that help the body transition from wakefulness to slumber.

Researchers have uncovered the genetic factors that make some people susceptible to Whipple's disease, an intestinal inflammatory disorder that causes diarrhea, pain, and weight loss.

Detailed structural images reveal how an ion channel helps curtail a neuron’s firing. The work has relevance for diseases in which this molecule malfunctions.

For the first time, scientists have shown that a small cluster of cells in the human embryo dictates the fate of other embryonic cells. The discovery of this developmental “organizer” could advance research into many human diseases, and it suggests we have more in common with birds than meets the...

A new imaging tool makes it possible to track the firing of millions of brain cells in mice while the animals move about as normal. The method could help shed new light onto the neural processes that create behavior.

Scientists have developed a new strategy to study the cells that host hidden reserves of dormant HIV, a step that may lead to new treatments that go beyond controlling the infection and instead aim to eradicate the virus entirely.

Among other superpowers, stem cells have a knack for fending off viruses like dengue and zika. Scientists have gained new insight into these curious defense strategies—knowledge they say could fuel the development of drugs against a range of diseases.

New research sheds light on how some cancer cells use molecular pumps to expel chemotherapy drugs before they have a chance to work.