The immune system is the body’s tool for preventing ... This innate immunity includes the external barriers of our body — the first line of defense against pathogens — such as the skin ...

"The blood–brain barrier is critical for keeping the immune system out of the brain," Dr. Santoro explains. "Any disruption could be enough to cause neurologic disease." The new study involved samples ...

When these look-alike proteins leak through a compromised gut barrier, your immune system may create antibodies against them that also attack your own similar-looking tissues. This case of ...