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 ...

In a recent study posted to the bioRxiv* pre-print server, researchers investigated the complement component 1q (C1q) binding and subsequent complement activation by neutralizing antibodies (nAbs) ...

It was called ‘complement’ because it aided the antibacterial activity of antibodies. However, it is now known that the complement system can be activated early in an infection without the presence of ...

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 ...

Among people with sickle cell disease—an inherited blood disorder—acute chest syndrome (ACS) is the leading cause of death. The condition is the result of red blood cells becoming stiff, sticky, and ...

The figure focuses on complement activation by means of the alternative pathway because it is the one responsible for hemolysis in PNH. The lightning bolt symbolizes the spontaneous hydrolytic ...

Clinicogenomic landscape and outcomes of metastatic colorectal cancer patients with pathogenic GNAS variants. This is an ASCO Meeting Abstract from the 2025 ASCO Annual Meeting I. This abstract does ...

NK-CHAT may help detect antibody-mediated rejection earlier after kidney transplantation by measuring functional NK cell ...