RGMB/SMOC2 protein level ratio in blood (Ontology of Biological Attributes entry OBA_2053137) can be described as follows. A compound attribute that is the ratio of amount of repulsive guidance molecule B (human) in blood to amount of SPARC-related modular calcium-binding protein 2 (human) in blood. Also known as: the ratio of amount of repulsive guidance molecule B (human) in blood to amount of SPARC-related modular calcium-binding protein 2 (human) in blood.