Ontology of Biological Attributes id OBA_2053489 (PON2/PON3 protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of serum paraoxonase/arylesterase 2 (human) in blood to amount of serum paraoxonase/lactonase 3 (human) in blood. Also known as: the ratio of amount of serum paraoxonase/arylesterase 2 (human) in blood to amount of serum paraoxonase/lactonase 3 (human) in blood.