The complement system is a group of proteins that help your immune system to fight infection, heal injury and kill bacteria and viruses.

The complement system, also known as complement cascade, is a part of the humoral, innate immune system and enhances (complements) the ability of antibodies and phagocytic cells to clear microbes …

Complement is an important component of the innate immune system that is crucial for defense from microbial infections and for clearance of immune complexes and injured cells.

Complement activation is triggered by an antibody when it is bound to the antigen. It can also be triggered by some components of innate immunity. Thus the complement system works in both …

Nov 1, 2025 · Specifically, the complement system causes the lysis (bursting) of foreign and infected cells, the phagocytosis (ingestion) of foreign particles and cell debris, and the inflammation of …

The complement system plays a critical role in inflammation and defence against some bacterial infections. Complement may also be activated during reactions against incompatible blood …

The complement system consists of a series of heat-labile serum proteins that are activated in turn. The complements exist as soluble inactive precursors which once activated, a complement component …

Sep 1, 2025 · Complement factors form a complex network of proteins found in plasma, tissue fluids, and on cell membranes that, when activated, lead to a cascade of inflammatory responses central to …

There are three different pathways by which the complement system may occur. The classical complement pathway is the main pathway by which the complement system occurs. It is comprised …

May 24, 2023 · The noncanonical functions of the complement system include their roles in development, differentiation, local homeostasis and other cellular functions. Complement proteins …