A compound attribute that is the ratio of amount of CD166 antigen (human) in blood to amount of neurogenic locus notch homolog protein 1 (human) in blood. The trait is OBA_2054298 (ALCAM/NOTCH1 protein level ratio in blood). Also known as: the ratio of amount of CD166 antigen (human) in blood to amount of neurogenic locus notch homolog protein 1 (human) in blood.