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Sensory cells of the mouse intestine let the brain know if certain compounds are present by speaking directly to gut neurons via serotonin.

Overzealous activity by mucosa-associated invariant T (MAIT) cells in response to bacterial toxins can lead to illness instead of stopping it.

The discovery of peptides, enzymes, and other gene products that confer antibiotic resistance could give clues to how it develops.

Neutrophils loaded with the chemotherapy drug paclitaxel traverse the blood-brain barrier and kill residual cancer cells after tumor-resection surgery in mice.

Biologists’ walk in the woods sparks the creation of a masterful fruit fly field guide. 

A study suggests that “chief” cells in the stomach act as reserve stem cells that are activated by tissue damage and may be the long-sought source of gastric cancer.

In an effort to crack down on unauthorized postings of journal articles, the American Psychological Association is policing the Internet for scientists sharing their own work. 

The brains of Polistes paper wasps express different genes when identifying faces than when distinguishing between simple patterns, a study finds.

Injecting photosynthetic microbes into oxygen-starved heart tissue can improve cardiac function in rodents. 

Research shows that human immunity develops much earlier than previously thought, but functions differently in adults.

The Scientist identifies a mystery woman in a historic photo as an accomplished researcher from a family of famous scientists whose experiments on DNA replication contributed to a Nobel prize.

Molecular and Cellular Biology has found numerous errors after launching a retrospective sweep of the figures it’s published in recent years.