AZU1/MPO protein level ratio in blood (Ontology of Biological Attributes identifier OBA_2053543) can be described as follows. A compound attribute that is the ratio of amount of azurocidin (human) in blood to amount of myeloperoxidase (human) in blood. Also known as: the ratio of amount of azurocidin (human) in blood to amount of myeloperoxidase (human) in blood.