A complement C4 (also known as a complement component 4, or simply C4) is a test to measure the level of C4 proteins you have in your blood. These proteins play a role in how your immune system ...

Complement component 3, often called C3, is an essential protein of the immune system. This protein plays a vital role in the body’s innate immune system, providing: the first line of defense against ...

Scientists discovered how macrophages, which act as the immune system's first line of defense, tailor their specific responses to various intruders through the independent and cooperative functions of ...

Our bodies response to invading pathogens through different mechanisms of the immune system. Innate immunity first detects disease and relays a defense signal to activate the second wave of immune ...

From football fields to military training grounds, head injuries are leaving lasting marks on the brain in ways we're only ...

Scientists have found a way to supercharge the immune system’s T cells by blocking a protein called Ant2, essentially rewiring how these cells generate energy. This metabolic reprogramming makes them ...

Protein is one of the most talked-about nutrients in the health world, and for good reason. The amino acids we get from proteins help build and repair body tissues, support the immune system, and keep ...

This series of Special Features takes an in-depth look at the science behind some of the most debated nutrition-related topics, weighing in on the facts and debunking the myths. Share on Pinterest ...

With Alzheimer’s disease therapies finally reaching the market and hundreds of active clinical trials for therapies and diagnostics, it seems like every week brings another potential avenue to explore ...