FKBP5/TBCB protein level ratio in blood (OBA_2055248, an Ontology of Biological Attributes identifier) can be described as follows. A compound attribute that is the ratio of amount of peptidyl-prolyl cis-trans isomerase FKBP5 (human) in blood to amount of tubulin-folding cofactor B (human) in blood. Also known as: the ratio of amount of peptidyl-prolyl cis-trans isomerase FKBP5 (human) in blood to amount of tubulin-folding cofactor B (human) in blood.