OBA_2053889 (MAP4K5/STAT5B 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 signal transducer and activator of transcription 5B (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 signal transducer and activator of transcription 5B (human) in blood.