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 ...

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 ...

aDepartment of Pediatrics, Division of Allergy and Immunology, Marmara University, School of Medicine, Istanbul, Türkiye bDepartment of Radiology, Marmara University, School of Medicine, Istanbul, ...

Copyright: Published by Elsevier Ltd. The complement system is recognised as a protector against blood-borne pathogens and a controller of immune system and tissue ...

Complement may drive the pathology of hypertension through effects on innate and adaptive immune responses. Recently an injurious role for the anaphylatoxin receptors C3aR (complement component 3a ...

Peristaltic movement of the intestine propels food down the length of the gastrointestinal tract to promote nutrient absorption. Interactions between intestinal macrophages and the enteric nervous ...

The membrane attack complex (MAC or C5b-9) is an important effector of the immune system to kill invading microbes. MAC formation is initiated when complement enzymes on the bacterial surface convert ...

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 ...

Our immune system responds to infectious (PAMPs) and tissue damage (DAMPs) signals. The complement system and alarmin High-Mobility Group Box 1 (HMGB1) are two powerful soluble actors of human host ...

Complement activation as a driver of pathology in myasthenia gravis (MG) has been appreciated for decades. The terminal complement component [membrane attack complex (MAC)] is found at the ...