A compound attribute that is the ratio of amount of CD83 antigen (human) in blood to amount of hepatitis A virus cellular receptor 2 (human) in blood. The trait is Ontology of Biological Attributes entry OBA_2053375 (CD83/HAVCR2 protein level ratio in blood). Also known as: the ratio of amount of CD83 antigen (human) in blood to amount of hepatitis A virus cellular receptor 2 (human) in blood.