retinol is among the most usable forms of vitamin a, which also include retinal (aldehyde form), retinoic acid (acid form) and retinyl ester (ester form). retinol is normaly ingested in a precursor form.
Parent Term
Biochemical pathway
Parent Definition
A linked series of chemical reactions that occur in a defined order within or between organism cells, and lead to a known function or end product.