APP/TMSB10 protein level ratio in blood (OBA_2053921, an Ontology of Biological Attributes id) can be described as follows. A compound attribute that is the ratio of amount of amyloid-beta precursor protein (human) in blood to amount of thymosin beta-10 (human) in blood. Also known as: the ratio of amount of amyloid-beta precursor protein (human) in blood to amount of thymosin beta-10 (human) in blood.