APEX1/ELOA protein level ratio in blood (OBA_2054335, an Ontology of Biological Attributes identifier) can be described as follows. A compound attribute that is the ratio of amount of DNA repair nuclease/redox regulator APEX1 (human) in blood to amount of elongin-A (human) in blood. Also known as: the ratio of amount of DNA repair nuclease/redox regulator APEX1 (human) in blood to amount of elongin-A (human) in blood.