A compound attribute that is the ratio of amount of layilin (human) in blood to amount of receptor-type tyrosine-protein phosphatase N2 (human) in blood. The trait is Ontology of Biological Attributes id OBA_2054945 (LAYN/PTPRN2 protein level ratio in blood). Also known as: the ratio of amount of layilin (human) in blood to amount of receptor-type tyrosine-protein phosphatase N2 (human) in blood.