Ontology of Biological Attributes identifier OBA_2057225 (level of cytotoxic T-lymphocyte protein 4 (human) in cerebrospinal fluid) is the amount of a cytotoxic T-lymphocyte protein 4 (human) when measured in cerebrospinal fluid. Also known as: cerebrospinal fluid cytotoxic T-lymphocyte protein 4 (human) amount.