Ontology of Biological Attributes entry OBA_2053460 (PPP1R9B/SCAMP3 protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of neurabin-2 (human) in blood to amount of secretory carrier-associated membrane protein 3 (human) in blood. Also known as: the ratio of amount of neurabin-2 (human) in blood to amount of secretory carrier-associated membrane protein 3 (human) in blood.