level of 26S proteasome non-ATPase regulatory subunit 4 (human) in cerebrospinal fluid (OBA_2058154) is the amount of a 26S proteasome non-ATPase regulatory subunit 4 (human) when measured in cerebrospinal fluid. Also known as: cerebrospinal fluid 26S proteasome non-ATPase regulatory subunit 4 (human) amount.