Harvard immunologist Dennis Kasper and his colleagues have found that tiny changes in gut bacteria can flip the immune system from calm to inflamed, even when the microbes look harmless. Their work, ...

A study reveals how microscopic bacteria can physically alter your cells and wreak havoc.

Common gut bacteria use protein delivery systems to interact directly with human cells, reshaping how scientists view the ...

Scientists have uncovered a direct molecular mechanism by which gut bacteria inject proteins into human cells, reshaping immune responses and potentially driving inflammatory disease. Scientists have ...

Researchers found that butyrate, a microbial metabolite, enhances T-cell activity, thereby boosting IgA antibody production. This pathway may be key in enhancing mucosal vaccine responses and offers a ...

Bacteria in the human gut can directly deliver proteins into human cells, actively shaping immune responses. A consortium led by researchers at Helmholtz Munich, with participation from Ludwig ...

Animals house thousands of commensal bacterial species in their guts, which play an important role in maintaining the host’s health. 1 However, antibiotic treatment indiscriminately wipes out both ...

The human intestine is home to trillions of microscopic organisms, including hundreds of species of bacteria. In most people, these bacteria co-exist peacefully and contribute to a mutually beneficial ...

NEW YORK (Reuters Health) - Contrary to conventional wisdom, the appendix may not be useless after all. New research suggests that the structure helps beneficial bacteria survive and repopulate the ...

“A very diverse set of gut bacteria can ‘swim’ through the layer of mucus that lines the intestines using specialized thread-like structures called flagella, the assembly and function of which ...