A compound attribute that is the ratio of amount of junctional adhesion molecule B (human) in blood to amount of TGF-beta receptor type-2 (human) in blood. The trait is JAM2/TGFBR2 protein level ratio in blood (Ontology of Biological Attributes entry OBA_2055492). Also known as: the ratio of amount of junctional adhesion molecule B (human) in blood to amount of TGF-beta receptor type-2 (human) in blood.