ENG/TNFSF10 protein level ratio in blood (Ontology of Biological Attributes identifier OBA_2054670) can be described as follows. A compound attribute that is the ratio of amount of endoglin (human) in blood to amount of tumor necrosis factor ligand superfamily member 10 (human) in blood. Also known as: the ratio of amount of endoglin (human) in blood to amount of tumor necrosis factor ligand superfamily member 10 (human) in blood.