A compound attribute that is the ratio of amount of transcription regulator protein BACH1 (human) in blood to amount of protein HEXIM1 (human) in blood. The trait is BACH1/HEXIM1 protein level ratio in blood (Ontology of Biological Attributes term OBA_2053558). Also known as: the ratio of amount of transcription regulator protein BACH1 (human) in blood to amount of protein HEXIM1 (human) in blood.