SNAP23/TBL1X protein level ratio in blood (OBA_2055658, an Ontology of Biological Attributes id) can be described as follows. A compound attribute that is the ratio of amount of synaptosomal-associated protein 23 (human) in blood to amount of F-box-like/WD repeat-containing protein TBL1X (human) in blood. Also known as: the ratio of amount of synaptosomal-associated protein 23 (human) in blood to amount of F-box-like/WD repeat-containing protein TBL1X (human) in blood.