level of polypeptide N-acetylgalactosaminyltransferase 9 (human) in cerebrospinal fluid (Ontology of Biological Attributes id OBA_2081101) is the amount of a polypeptide N-acetylgalactosaminyltransferase 9 (human) when measured in cerebrospinal fluid. Also known as: cerebrospinal fluid polypeptide N-acetylgalactosaminyltransferase 9 (human) amount.