Toll-Like Receptor 2 (TLR2) is a protein found on the surface of certain immune cells. It plays a crucial role in the body's defense system by recognizing specific components of pathogens, such as bacteria and viruses. When TLR2 detects these components, it triggers an immune response, helping the body to fight off infections. TLR2 is part of a larger family of receptors known as Toll-Like Receptors, which are essential for detecting various microbial infections. By activating immune cells, TLR2 helps to initiate inflammation and the production of signaling molecules called cytokines, which further enhance the immune response.