A compound attribute that is the ratio of amount of FYN-binding protein 1 (human) in blood to amount of platelet-derived growth factor subunit B (human) in blood. The trait is Ontology of Biological Attributes id OBA_2053687 (FYB1/PDGFB protein level ratio in blood). Also known as: the ratio of amount of FYN-binding protein 1 (human) in blood to amount of platelet-derived growth factor subunit B (human) in blood.