How do complement protein different from antibodies?

Complement proteins are part of the innate immune system and work primarily to enhance the ability of antibodies and phagocytic cells to clear pathogens. They are a series of proteins that, when activated, trigger a cascade of reactions leading to cell lysis, opsonization, and inflammation. In contrast, antibodies are specific proteins produced by B cells of the adaptive immune system that bind to specific antigens on pathogens, facilitating their neutralization or destruction. While both play crucial roles in the immune response, they function through different mechanisms and pathways.