A compound attribute that is the ratio of amount of protein AMBP (human) in blood to amount of hepatitis A virus cellular receptor 1 (human) in blood. The trait is AMBP/HAVCR1 protein level ratio in blood (OBA_2054261, an Ontology of Biological Attributes term). Also known as: the ratio of amount of protein AMBP (human) in blood to amount of hepatitis A virus cellular receptor 1 (human) in blood.