Ontology of Biological Attributes id OBA_2053891 (MAP4K5/TBCC protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of mitogen-activated protein kinase kinase kinase kinase 5 (human) in blood to amount of tubulin-specific chaperone C (human) in blood. Also known as: the ratio of amount of mitogen-activated protein kinase kinase kinase kinase 5 (human) in blood to amount of tubulin-specific chaperone C (human) in blood.