A compound attribute that is the ratio of amount of CD40 ligand (human) in blood to amount of tumor necrosis factor ligand superfamily member 14 (human) in blood. The trait is Ontology of Biological Attributes entry OBA_2054216 (CD40LG/TNFSF14 protein level ratio in blood). Also known as: the ratio of amount of CD40 ligand (human) in blood to amount of tumor necrosis factor ligand superfamily member 14 (human) in blood.