Ontology of Biological Attributes id OBA_2053545 (AZU1/PRTN3 protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of azurocidin (human) in blood to amount of myeloblastin (human) in blood. Also known as: the ratio of amount of azurocidin (human) in blood to amount of myeloblastin (human) in blood.