Researchers are going beyond fecal samples to understand how the patterns of commensal microbes in the gastrointestinal tract influence development and health.

The Scientist spoke with Brigham and Women’s Hospital and Harvard Medical School researchers Scott Weiss and Yang-Yu Liu, who propose that people bank stool samples when they’re young and healthy so that they can be transplanted to rejuvenate the gut microbiome later on.

At about 2 centimeters in length, Thiomargarita magnifica tests scientists’ notions of how large microbes can grow.

Health data from 5,744 adults over the age of 50 reveals an association between stressors such as discrimination and a relatively small proportion of younger infection-fighting immune cells.

A study reveals a molecular pathway linking exercise to an amped-up immune response to pancreatic cancer and greater responsiveness to treatment.

How scientists aim to induce an immune response against addictive drugs

Researchers are turning to the immune system for help in treating addiction and preventing overdose.

Dozens of intranasally delivered vaccines targeting SARS-CoV-2 are in development. Could they pave the way for widespread nasal vaccination in the future?

Two strains of monkeypox have been detected in the US, suggesting the virus has been circulating in the country for some time, the CDC says.

The results could help guide the design of new vaccines for the disease.

Researchers find that tissue-resident memory T cells in the corneas of mice engender a lasting immune response.

A new program will provide 150 early-career scientists committed to advancing diversity, inclusion, and equity up to $8.6 million each.

A sugar that’s less abundant in the blood of people with diabetes binds to SARS-CoV-2’s spike protein and disrupts the virus’s ability to fuse with cells.