Ficolins are a type of protein found in the immune system that play a crucial role in recognizing and binding to specific carbohydrates on the surface of pathogens, such as bacteria and viruses. They are part of the innate immune response, helping to identify and eliminate foreign invaders in the body. These proteins are produced mainly by the liver and are present in blood plasma. Ficolins can activate the complement system, which enhances the ability of antibodies and phagocytic cells to clear pathogens. Their function is essential for maintaining the body's defense against infections and supporting overall immune health.