Paracrine cell growth factors are important in their cell-cell interactions which are associated with growth outside of their own cellular membranes. A form of signalling in which the target cell is close to the signal releasing cell. Neurotransmitters and neuro-hormones are usually considered to fall into this category of cytokines and witnessed through endocrinology.

The secretion of a hormone or growth factor from anything other than an endocrine gland. This includes secretions from an autocrine system and cytocrine glands.

From the BioTech Dictionary at For further information see the BioTech homenode.

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