T-Helper Cells are a type of white blood cell that play a crucial role in the immune system. They help activate and direct other immune cells, such as B cells and T-cytotoxic cells, to respond effectively to infections. By releasing signaling molecules called cytokines, T-Helper Cells enhance the body's ability to fight off pathogens. These cells are essential for the adaptive immune response, which is the body's tailored defense against specific invaders. There are different subsets of T-Helper Cells, including Th1 and Th2, each specializing in responding to different types of infections, such as viruses or parasites.