BCR/DCTN1 protein level ratio in blood (OBA_2053237, an Ontology of Biological Attributes entry) can be described as follows. A compound attribute that is the ratio of amount of breakpoint cluster region protein (human) in blood to amount of dynactin subunit 1 (human) in blood. Also known as: the ratio of amount of breakpoint cluster region protein (human) in blood to amount of dynactin subunit 1 (human) in blood.