The amount of a CDK5 and ABL1 enzyme substrate 2 (human) when measured in cerebrospinal fluid. The trait is Ontology of Biological Attributes term OBA_2080710 (level of CDK5 and ABL1 enzyme substrate 2 (human) in cerebrospinal fluid). Also known as: cerebrospinal fluid CDK5 and ABL1 enzyme substrate 2 (human) amount.