The amount of a actin-related protein 2/3 complex subunit 3 (human) when measured in cerebrospinal fluid. The trait is level of actin-related protein 2/3 complex subunit 3 (human) in cerebrospinal fluid (OBA_2056062). Also known as: cerebrospinal fluid actin-related protein 2/3 complex subunit 3 (human) amount.