Ontology of Biological Attributes id OBA_2080654 (level of U6 snRNA phosphodiesterase 1 (human) in cerebrospinal fluid) is the amount of a U6 snRNA phosphodiesterase 1 (human) when measured in cerebrospinal fluid. Also known as: cerebrospinal fluid U6 snRNA phosphodiesterase 1 (human) amount.