The amount of a DNA-directed RNA polymerase II subunit RPB11-a (human) when measured in cerebrospinal fluid. The trait is Ontology of Biological Attributes entry OBA_2058076 (level of DNA-directed RNA polymerase II subunit RPB11-a (human) in cerebrospinal fluid). Also known as: cerebrospinal fluid DNA-directed RNA polymerase II subunit RPB11-a (human) amount.