A compound attribute that is the ratio of amount of hematopoietic progenitor cell antigen CD34 (human) in blood to amount of integrin alpha-V (human) in blood. The trait is CD34/ITGAV protein level ratio in blood (OBA_2054196, an Ontology of Biological Attributes identifier). Also known as: the ratio of amount of hematopoietic progenitor cell antigen CD34 (human) in blood to amount of integrin alpha-V (human) in blood.