The amount of a COP9 signalosome complex subunit 5 (human) when measured in cerebrospinal fluid. The trait is Ontology of Biological Attributes identifier OBA_2080212 (level of COP9 signalosome complex subunit 5 (human) in cerebrospinal fluid). Also known as: cerebrospinal fluid COP9 signalosome complex subunit 5 (human) amount.