Biesalski, Hans K New aspects in vitamin a metabolism: the role of retinyl esters as systemic and local sources for retinol in mucous epithelia. [electronic resource] - The Journal of nutrition 12 2004 - 3453S-3457S p. digital Publication Type: Journal Article; Review ISSN: 0022-3166 Standard No.: 10.1093/jn/134.12.3453S doi Subjects--Topical Terms: AnimalsDiterpenesEpithelium--metabolismEsters--metabolismHumansLung NeoplasmsMouth Mucosa--metabolismMucous Membrane--metabolismRespiratory System--metabolismRetinyl EstersVitamin A--administration & dosage