ART3/RGMB protein level ratio in blood (OBA_2054102) can be described as follows. A compound attribute that is the ratio of amount of ecto-ADP-ribosyltransferase 3 (human) in blood to amount of repulsive guidance molecule B (human) in blood. Also known as: the ratio of amount of ecto-ADP-ribosyltransferase 3 (human) in blood to amount of repulsive guidance molecule B (human) in blood.