The amount of a probable E3 ubiquitin-protein ligase MID2 (human) when measured in cerebrospinal fluid. The trait is level of probable E3 ubiquitin-protein ligase MID2 (human) in cerebrospinal fluid (Ontology of Biological Attributes term OBA_2081558). Also known as: cerebrospinal fluid probable E3 ubiquitin-protein ligase MID2 (human) amount.