Your complement system consists of a group of important proteins in your bloodstream. These proteins help your immune system fight off harmful invaders, such as bacteria, and other foreign substances.

A complement blood test measures how well complement proteins in your blood support immune defense. The complement system helps antibodies fight germs and clear foreign substances. Complement testing ...

The complement system is an important part of the humoral immune defence in mammals that is formed by about 35 soluble and cell-surface proteins. Together these proteins enable the host to recognize ...

PHILADELPHIA - A team from the University of Pennsylvania School of Medicine and Utrecht University has deciphered a key step in an evolutionarily old branch of the immune response. This system, ...

Scientists have published new details of their research into the complement reaction, an immune system response that kills thousands annually. Researchers have teased out the molecular process that ...

Because the formation of C3 convertase is the point in the complement cascade at which the three known pathways of complement activation converge, the elimination of C3 prevents the generation of ...

Leicester scientists have mapped the "bouquet-like" structure of a key part of the body's immune system responsible for neutralising bacteria and viruses. A team from the University of Leicester's ...