Retinoid
Retinoids are used in medicine, where they regulate epithelial cell growth.Retinoids have many important functions throughout the body including roles in vision, regulation of cell proliferation and differentiation, growth of bone tissue, immune function, and activation of tumor suppressor genes.
Research is also being done into their ability to treat skin cancers. Currently, alitretinoin (9-cis-retinoic acid) may be used topically to help treat skin lesions.