A compound attribute that is the ratio of amount of hepatitis A virus cellular receptor 2 (human) in blood to amount of tumor necrosis factor receptor superfamily member 1B (human) in blood. The trait is HAVCR2/TNFRSF1B protein level ratio in blood (OBA_2053088). Also known as: the ratio of amount of hepatitis A virus cellular receptor 2 (human) in blood to amount of tumor necrosis factor receptor superfamily member 1B (human) in blood.