A compound attribute that is the ratio of amount of basigin (human) in blood to amount of cytoskeleton-associated protein 4 (human) in blood. The trait is OBA_2053305 (BSG/CKAP4 protein level ratio in blood). Also known as: the ratio of amount of basigin (human) in blood to amount of cytoskeleton-associated protein 4 (human) in blood.