T-helper 2 cells

T-helper 2 cells (Th2 cells) are a type of immune cell that plays a key role in defending the body against parasites, like worms, and in managing allergic responses. They activate other immune cells by releasing signaling proteins called cytokines, which promote the production of antibodies—special proteins that identify and neutralize invaders. Th2 cells also encourage the class switching of B cells to produce certain antibodies involved in allergies. Overall, they help coordinate the immune system’s response to specific threats but can also contribute to allergic reactions if overactive.