A compound attribute that is the ratio of amount of LRP chaperone MESD (human) in blood to amount of sorting nexin-9 (human) in blood. The trait is MESD/SNX9 protein level ratio in blood (OBA_2054533, an Ontology of Biological Attributes entry). Also known as: the ratio of amount of LRP chaperone MESD (human) in blood to amount of sorting nexin-9 (human) in blood.