A compound attribute that is the ratio of amount of TGF-beta receptor type-2 (human) in blood to amount of thrombomodulin (human) in blood. The trait is Ontology of Biological Attributes term OBA_2053045 (TGFBR2/THBD protein level ratio in blood). Also known as: the ratio of amount of TGF-beta receptor type-2 (human) in blood to amount of thrombomodulin (human) in blood.