A compound attribute that is the ratio of amount of nectin-4 (human) in blood to amount of TGF-beta receptor type-2 (human) in blood. The trait is Ontology of Biological Attributes entry OBA_2055123 (NECTIN4/TGFBR2 protein level ratio in blood). Also known as: the ratio of amount of nectin-4 (human) in blood to amount of TGF-beta receptor type-2 (human) in blood.