NECTIN2/SDC1 protein level ratio in blood (Ontology of Biological Attributes identifier OBA_2055117) can be described as follows. A compound attribute that is the ratio of amount of nectin-2 (human) in blood to amount of syndecan-1 (human) in blood. Also known as: the ratio of amount of nectin-2 (human) in blood to amount of syndecan-1 (human) in blood.