Definition: natural substances produced by the body (hormones) or obtained from food (vitamins, minerals) that promote growth and development by directing cell maturation and differentiation and by mediating maintenance and repair of tissues; abnormalities in growth factors may be involved in benign and malignant neoplasia.
© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.
Search Stedman's Medical Dictionary
Examples: glitazone, GI cocktail, etc.