"Cytokines are polypeptide mediators which act as communication signals among cells of the immune system as well as among other cells and tissues in the body. They are a heterogeneous and complex group and include interferons, tumor necrosis factor and chemokines. They play a key role in homeostasis and inhost defense and are involved in such inflammatory and autoimmune diseases such as rheumatoid arthritis as well as infectious diseases ..."
"Cytokines are polypeptide mediators which act as communication signals among cells of the immune system as well as among other cells and tissues in the body. They are a heterogeneous and complex group and include interferons, tumor necrosis factor and chemokines. They play a key role in homeostasis and in host defense and are involved in such inflammatory and autoimmune diseases such as rheumatoid arthritis as well as infectious disease ..."