Which type of T cell promotes the activation of other immune cells?

Helper T cells play a crucial role in the immune response by promoting the activation of other immune cells. They are essential for the adaptive immune system as they release cytokines that help activate and direct various immune cells, including B cells and cytotoxic T cells. By doing so, they enhance the body's ability to respond to infections and other immune challenges.

Cytotoxic T cells primarily focus on directly killing infected or cancerous cells rather than activating other immune cells. Regulatory T cells are important for maintaining immune system homeostasis and preventing autoimmunity; they help to suppress the immune response but do not primarily activate other immune cells. Memory T cells are involved in the long-term immune response and provide a faster response to previously encountered antigens, but they do not facilitate the activation of other immune cells in the way that helper T cells do. Thus, helper T cells are vital for orchestrating the overall immune response.