Ontology of Biological Attributes entry OBA_2053627 (DLK1/RGMB protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of protein delta homolog 1 (human) in blood to amount of repulsive guidance molecule B (human) in blood. Also known as: the ratio of amount of protein delta homolog 1 (human) in blood to amount of repulsive guidance molecule B (human) in blood.