#lymphokine  a cytokine secreted by helper T cells in response to stimulation by antigens and that play a role in cell-mediated immunity
  supertype:  #cytokine  any of various proteins secreted by cells of the immune system that serve to regulate the immune system
  subtype:  #interleukin  any of several lymphokines that promote macrophages and killer T cells and B cells and other components of the immune system

No statement uses or specializes #lymphokine; click here to add one.