CASP3/PPIB protein level ratio in blood (OBA_2054775, an Ontology of Biological Attributes entry) can be described as follows. A compound attribute that is the ratio of amount of caspase-3 (human) in blood to amount of peptidyl-prolyl cis-trans isomerase B (human) in blood. Also known as: the ratio of amount of caspase-3 (human) in blood to amount of peptidyl-prolyl cis-trans isomerase B (human) in blood.