A compound attribute that is the ratio of amount of FAS-associated death domain protein (human) in blood to amount of mitochondrial peptide methionine sulfoxide reductase (human) in blood. The trait is FADD/MSRA protein level ratio in blood (Ontology of Biological Attributes identifier OBA_2055341). Also known as: the ratio of amount of FAS-associated death domain protein (human) in blood to amount of mitochondrial peptide methionine sulfoxide reductase (human) in blood.