HAVCR2/LRRC25 protein level ratio in blood (OBA_2053085, an Ontology of Biological Attributes term) can be described as follows. A compound attribute that is the ratio of amount of hepatitis A virus cellular receptor 2 (human) in blood to amount of leucine-rich repeat-containing protein 25 (human) in blood. Also known as: the ratio of amount of hepatitis A virus cellular receptor 2 (human) in blood to amount of leucine-rich repeat-containing protein 25 (human) in blood.