A compound attribute that is the ratio of amount of aspartate--tRNA ligase, cytoplasmic (human) in blood to amount of eukaryotic translation initiation factor 4B (human) in blood. The trait is DARS1/EIF4B protein level ratio in blood (OBA_2055080, an Ontology of Biological Attributes entry). Also known as: the ratio of amount of aspartate--tRNA ligase, cytoplasmic (human) in blood to amount of eukaryotic translation initiation factor 4B (human) in blood.