APEX1/NCF2 protein level ratio in blood (OBA_2055170) 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 neutrophil cytosol factor 2 (human) in blood. Also known as: the ratio of amount of DNA repair nuclease/redox regulator APEX1 (human) in blood to amount of neutrophil cytosol factor 2 (human) in blood.