The amount of a Xaa-Pro aminopeptidase 3 (human) when measured in cerebrospinal fluid. The trait is Ontology of Biological Attributes entry OBA_2081176 (level of Xaa-Pro aminopeptidase 3 (human) in cerebrospinal fluid). Also known as: cerebrospinal fluid Xaa-Pro aminopeptidase 3 (human) amount.