PPP1R2/USP8 protein level ratio in blood (OBA_2053509, an Ontology of Biological Attributes identifier) can be described as follows. A compound attribute that is the ratio of amount of protein phosphatase inhibitor 2 (human) in blood to amount of ubiquitin carboxyl-terminal hydrolase 8 (human) in blood. Also known as: the ratio of amount of protein phosphatase inhibitor 2 (human) in blood to amount of ubiquitin carboxyl-terminal hydrolase 8 (human) in blood.