IPCEF1/TXLNA protein level ratio in blood (OBA_2055518, an Ontology of Biological Attributes identifier) can be described as follows. A compound attribute that is the ratio of amount of interactor protein for cytohesin exchange factors 1 (human) in blood to amount of alpha-taxilin (human) in blood. Also known as: the ratio of amount of interactor protein for cytohesin exchange factors 1 (human) in blood to amount of alpha-taxilin (human) in blood.