A compound attribute that is the ratio of amount of B-cell receptor CD22 (human) in blood to amount of tumor necrosis factor receptor superfamily member 13C (human) in blood. The trait is CD22/TNFRSF13C protein level ratio in blood (OBA_2055375). Also known as: the ratio of amount of B-cell receptor CD22 (human) in blood to amount of tumor necrosis factor receptor superfamily member 13C (human) in blood.