A compound attribute that is the ratio of amount of all-trans-retinol dehydrogenase [NAD(+)] ADH4 (human) in blood to amount of selenocysteine lyase (human) in blood. The trait is Ontology of Biological Attributes id OBA_2053635 (ADH4/SCLY protein level ratio in blood). Also known as: the ratio of amount of all-trans-retinol dehydrogenase [NAD(+)] ADH4 (human) in blood to amount of selenocysteine lyase (human) in blood.