Ontology of Biological Attributes identifier OBA_2055301 (FCRL2/TNFRSF13B protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of Fc receptor-like protein 2 (human) in blood to amount of tumor necrosis factor receptor superfamily member 13B (human) in blood. Also known as: the ratio of amount of Fc receptor-like protein 2 (human) in blood to amount of tumor necrosis factor receptor superfamily member 13B (human) in blood.