A compound attribute that is the ratio of amount of bleomycin hydrolase (human) in blood to amount of platelet endothelial aggregation receptor 1 (human) in blood. The trait is Ontology of Biological Attributes identifier OBA_2053293 (BLMH/PEAR1 protein level ratio in blood). Also known as: the ratio of amount of bleomycin hydrolase (human) in blood to amount of platelet endothelial aggregation receptor 1 (human) in blood.