The amount of a ubiquitin-ribosomal protein eS31 fusion protein (human) when measured in cerebrospinal fluid. The trait is OBA_2058327 (level of ubiquitin-ribosomal protein eS31 fusion protein (human) in cerebrospinal fluid). Also known as: cerebrospinal fluid ubiquitin-ribosomal protein eS31 fusion protein (human) amount.