Term Name:	cytokine activity
Synonyms:	autocrine activity, paracrine activity
Definition:	The activity of a soluble extracellular gene product that interacts with a receptor to effect a change in the activity of the receptor to control the survival, growth, differentiation and effector function of tissues and cells.
Ontology:	GO: Molecular Function [GO:0005125]    QuickGO    AmiGO