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A nasal spray in mice boosted lung immunity against viruses, bacteria and allergens — but a truly universal vaccine is still years away.

A new study finds that in low-oxygen environments, red blood cells absorb more glucose and convert it into a molecule that helps release oxygen into tissues, revealing an unexpected way the body regulates blood sugar.

By creating a hybrid immune system between the recipient and the donor, researchers were able to transplant insulin-producing cells that were not rejected.

Researchers showed that "exosomes" from pig semen may be used in a potential new treatment for retinoblastoma.

Pupil size in people with synesthesia changed depending on how bright or dark the perceived colors were.

A new study found that microgravity simulated on Earth hindered sperm cell movement, egg fertilization and embryo development ‪—‬ findings that have serious implications for the future of space colonization.

Aging may "erase" the epigenetic markers that control gene expression in the brain, and this may create a snowball effect.

Intestinal viruses can activate immune cells that regulate carbohydrate metabolism, highlighting an overlooked role of the gut virome, a study in mice finds.

New research suggests that a single gene may play an outsize role in developing Alzheimer's, which suggests gene therapy for the condition could reach many people.

Mental health professionals recognize problematic gambling as an addiction. Should the same apply to excessive gaming, compulsive sexual behavior and problematic social media use?

Researchers boosted levels of a heart-healing hormone in mice and pigs with a single injection of a new, experimental form of self-amplifying RNA that prolonged hormone synthesis for many weeks.

AI chatbots are seduced by misinformation that is delivered in medical jargon, leading them to give potentially dangerous advice.

In people destined to get Alzheimer's in their mid-40s, one protein can delay the onset of the disease by about 20 years.