A compound attribute that is the ratio of amount of synaptosomal-associated protein 23 (human) in blood to amount of zinc finger and BTB domain-containing protein 16 (human) in blood. The trait is Ontology of Biological Attributes term OBA_2055660 (SNAP23/ZBTB16 protein level ratio in blood). Also known as: the ratio of amount of synaptosomal-associated protein 23 (human) in blood to amount of zinc finger and BTB domain-containing protein 16 (human) in blood.