Changes

==Introduction==

==Introduction==

The term cytokine is a generic name for the soluble proteins that mediate reactions between cells, acting via specific receptors on those cells. They are particularly important during effector stages of the immune system and the development of haematopoietic cells, and the repair of damaged tissue. Cytokines such as the Growth Factors have even been linked to the spread of cancer.

The term cytokine is a generic name for the soluble proteins that mediate reactions between cells, acting via specific receptors on those cells. They are particularly important during effector stages of the immune system, the development of haematopoietic cells, and the repair of damaged tissue. Cytokines such as the Growth Factors have even been linked to the spread of cancer.

==Nomenclature and classification==

==Nomenclature and classification==