OBA_2054200 (CD40/CRELD2 protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of tumor necrosis factor receptor superfamily member 5 (human) in blood to amount of protein disulfide isomerase CRELD2 (human) in blood. Also known as: the ratio of amount of tumor necrosis factor receptor superfamily member 5 (human) in blood to amount of protein disulfide isomerase CRELD2 (human) in blood.