Cytokine - A broad and loose category of small proteins that act through receptors, and are especially important to immune function (inflammation).
  • Cytokines include substances such as interferon, interleukin, and growth factors, which are secreted by certain cells of the immune system and have an effect on other cells. Their definite distinction from hormones is a topic of continued research.

Related Terms

  • Interferon
  • Interleukin
  • Growth factors
  • Inflammation
  • Immune cells


  • Cytokines
  • Cytokine proteins
  • Immune system proteins
  • Cytokines
  • cytokines
  • Cytokine