Cytokines are small and non-structural cell-signaling protein molecules, which can be synthesized by nearly all nucleated cells. Moreover, cytokines play the key role in the contact not only among the immune system cells, but also between the immune system cells and other types of cells. By binding to the cell specific membrane receptors, cytokines change cells in their behavior and character. According to the different functions, cytokines have different classification. In infection and/or inflammatory rea...