A compound attribute that is the ratio of amount of myelin-oligodendrocyte glycoprotein (human) in blood to amount of receptor-type tyrosine-protein phosphatase N2 (human) in blood. The trait is MOG/PTPRN2 protein level ratio in blood (Ontology of Biological Attributes id OBA_2054585). Also known as: the ratio of amount of myelin-oligodendrocyte glycoprotein (human) in blood to amount of receptor-type tyrosine-protein phosphatase N2 (human) in blood.