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 ...

Complement cascade is made up of about 30 proteins that cleave one another in a series of reactions that radiates from an initial binding site on a pathogen. Best known for its action against bacteria ...

Undertaking a study of proteins found in the complement system, an important part of the immune system, of patients with long COVID, researchers have identified a blood protein ‘signature’ that may ...

Faults in a certain part of the immune system might be at the root of some long covid cases, new research suggests. For many people, covid is an illness that blusters in and out of our lives as cases ...

C3G and IC-MPGN both cause protein deposits that reduce kidney function. Overactive proteins in the immune system lead to these different conditions. C3G and IC-MPGN are rare kidney conditions. They ...

Long COVID was identified in blood proteins, an analysis of longitudinal data suggested. Blood samples from long COVID patients showed changes to blood serum proteins at 6 months that indicated ...

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 ...