A compound attribute that is the ratio of amount of transcription regulator protein BACH1 (human) in blood to amount of forkhead box protein O1 (human) in blood. The trait is OBA_2053557 (BACH1/FOXO1 protein level ratio in blood). Also known as: the ratio of amount of transcription regulator protein BACH1 (human) in blood to amount of forkhead box protein O1 (human) in blood.