A compound attribute that is the ratio of amount of hepatitis A virus cellular receptor 2 (human) in blood to amount of paired immunoglobulin-like type 2 receptor beta (human) in blood. The trait is OBA_2053087 (HAVCR2/PILRB protein level ratio in blood). Also known as: the ratio of amount of hepatitis A virus cellular receptor 2 (human) in blood to amount of paired immunoglobulin-like type 2 receptor beta (human) in blood.