Complement activation is common in patients with systemic lupus erythematosus (SLE), resulting in hypocomplementemia and deposition of complement at sites of tissue damage. The availability of mice ...
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 ...
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.