The oil’s omega-3 fatty acids accumulate in the mice’s skin, triggering an immune response that causes hair loss.

Repairing damaged DNA appears to drive aging by causing the loss of epigenetic information, but restoring that information reverses such effects, a study finds.

A particular leucine-ferrying tRNA is more abundant in cancerous cells than healthy ones, and lowering its levels inhibits cancer growth, a study finds.

Two studies in mice now show that researchers can control when and where CAR T cells are active, potentially overcoming previous hurdles for CAR T–based treatments.

A neural pathway between the gut and the brain led to the release of dopamine when the mice ran on a wheel or treadmill, but only in the presence of a robust microbiome. 

A previously unknown kind of ribosome is responsible for folding sperm proteins, which decay before fertilization if prepared by other ribosomes.

Inactive synapses—found on tiny neuronal projections called filopodia—are abundant in the adult brain, a mouse study suggests.

A mouse study concludes color-detecting cones in the eye and a subset of neurons in the brain’s thalamus are why green light exposure has an analgesic effect.

After injecting moderate doses of the dissociative anesthetic into the animals, previously “awake” brain cells go dark, and those that had been dormant suddenly light up.

The eRNA detection method could one day be used to catch early warning signs of distress in wild ecosystems. 

Bats are known for staying healthy even while harboring viral infections. Now, research sheds light on how their unusual immune system evolved.

Viscous solutions accelerate the migration of tumor cells and may enable metastasis, according to a new study.

It’s not clear why grain-fed mice are better able to recover after infection, but a study’s findings suggest food type may skew the results of animal studies.

Mycobacterium leprae appeared to reprogram the animals’ livers to a state partially resembling early development, resulting in healthy organ growth.

Researchers find signatures pre- and post-vaccination that correlate with a more robust immune response. 

A high-fat diet induced changes to the animals’ vaginal microbiomes that boosted survival after exposure to the virus.

Abundant environmental CO₂ can increase plant biomass and photosynthesis, but it has downsides for agriculture and ecosystems, a growing body of research finds.

On average, researchers’ impact dropped by one-half to two-thirds over their careers.

A method appears to be the first to noninvasively reconstruct language from brain activity.