The Epstein-Barr virus and a high-risk gene may work together to trick the immune system into attacking the brain in MS, a ...

Scientists generally agree that eukaryotes, the domain of life whose cells contain nuclei and that includes almost all multicellular organisms, originated from a process involving the symbiotic union ...

Inflammatory gut bacteria that carry proteins structurally similar to myelin may trigger the development and progression of ...

A Japanese immunologist and two American scientists shared the Nobel Prize in physiology or medicine Monday for fundamental discoveries about how the immune system keeps itself in check, preventing ...

The single-celled parasite Entamoeba histolytica infects 50 million people each year, killing nearly 70,000. Usually, this wily, shape-shifting amoeba causes nothing worse than diarrhea. But sometimes ...

A new study shows human immune systems differ across populations, raising new questions for medicine and global drug research ...