OBA_2055215 (FCGR2A/FCGR2B protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of low affinity immunoglobulin gamma Fc region receptor II-a (human) in blood to amount of low affinity immunoglobulin gamma Fc region receptor II-b (human) in blood. Also known as: the ratio of amount of low affinity immunoglobulin gamma Fc region receptor II-a (human) in blood to amount of low affinity immunoglobulin gamma Fc region receptor II-b (human) in blood.