OBA_2053885 (MAD1L1/POLR2F protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of mitotic spindle assembly checkpoint protein MAD1 (human) in blood to amount of DNA-directed RNA polymerases I, II, and III subunit RPABC2 (human) in blood. Also known as: the ratio of amount of mitotic spindle assembly checkpoint protein MAD1 (human) in blood to amount of DNA-directed RNA polymerases I, II, and III subunit RPABC2 (human) in blood.