The immune system is composed of a complex network of different cell types protecting the body against various possible threats. Among these cells are T-helper (Th) cells type 1 (Th1) and type 2 (Th2), as well as T regulatory (Treg) cells. Th1 and Th2 are supposed to be in balance with each other, while Tregs regulate the immune response, by halting it when the desired effect, i.e. destroying t...