PLXNA4/SRPK2 protein level ratio in blood (OBA_2053524) can be described as follows. A compound attribute that is the ratio of amount of plexin-A4 (human) in blood to amount of SRSF protein kinase 2 (human) in blood. Also known as: the ratio of amount of plexin-A4 (human) in blood to amount of SRSF protein kinase 2 (human) in blood.