A compound attribute that is the ratio of amount of CD63 antigen (human) in blood to amount of tumor necrosis factor receptor superfamily member EDAR (human) in blood. The trait is CD63/EDAR protein level ratio in blood (OBA_2053335). Also known as: the ratio of amount of CD63 antigen (human) in blood to amount of tumor necrosis factor receptor superfamily member EDAR (human) in blood.