Ontology of Biological Attributes term OBA_2053552 (B4GALT1/SPON2 protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of beta-1,4-galactosyltransferase 1 (human) in blood to amount of spondin-2 (human) in blood. Also known as: the ratio of amount of beta-1,4-galactosyltransferase 1 (human) in blood to amount of spondin-2 (human) in blood.