What type of immunity does the complement system enhance?

The complement system enhances innate immunity. This system is an essential part of the immune response that operates as a first line of defense against pathogens. It involves a series of proteins that work together to identify and eliminate infectious agents such as bacteria and viruses. These proteins can initiate inflammation, attract immune cells to sites of infection, and promote the process of phagocytosis, where pathogens are engulfed and destroyed by immune cells.

The complement system responds rapidly to pathogens and does not require prior exposure to an antigen, which is a hallmark of innate immunity. It employs mechanisms such as opsonization, which marks pathogens for destruction, and membrane attack complexes that can directly lyse cells. Thus, its primary role is to enhance the body's immediate, non-specific defense mechanisms rather than the more specialized responses seen in adaptive immunity, where specific antibodies and cell-mediated responses are produced following antigen exposure.