A compound attribute that is the ratio of amount of NF-kappa-B essential modulator (human) in blood to amount of plexin-A4 (human) in blood. The trait is Ontology of Biological Attributes id OBA_2054413 (IKBKG/PLXNA4 protein level ratio in blood). Also known as: the ratio of amount of NF-kappa-B essential modulator (human) in blood to amount of plexin-A4 (human) in blood.