The immune system is the body’s tool for preventing or limiting infection. Its complex network of cells, organs, proteins, and tissues enables the immune system to defend the body from pathogens.

Your immune system protects you, but sometimes it overreacts. Learn how to recognize the signs and regain balance.

MIT scientists find the protein IL-17 that fights infection also acts on the brain, inducing anxiety or sociability. This adds to evidence that immune molecules can influence behavior during illness.

A study by Oregon Health & Science University researchers has uncovered a new way proteins can be changed inside cells. This ...

The human immune system is a remarkable evolutionary tool ... and writes/edits about sci-fi and how our world works. You can find his previous stuff at Gizmodo and Paste if you look hard enough.

If these findings are confirmed in humans, it could have implications for treating many diseases where the immune system becomes overactive.

To understand how this axis between the brain and the immune system works, we then looked at how the brain communicates with the liver. This organ is important in sensing energy levels in the body.

"It's such fundamental knowledge," Pae adds. "We're learning how our immune system works." ...

The works shows that white blood cells called ... The study also highlights a new defence tactic that the immune system deploys to protect the body beyond destroying germs. To the authors ...

First recognised as a unique disease in 2013, APDS is a condition that affects the way the immune system (the body’s natural defences) works. This means that people with APDS have a reduced ability to ...