ANXA4/LACTB2 protein level ratio in blood (OBA_2054325, an Ontology of Biological Attributes term) can be described as follows. A compound attribute that is the ratio of amount of annexin A4 (human) in blood to amount of endoribonuclease LACTB2 (human) in blood. Also known as: the ratio of amount of annexin A4 (human) in blood to amount of endoribonuclease LACTB2 (human) in blood.