Ontology of Biological Attributes id OBA_2081644 (level of mammalian ependymin-related protein 1 (human) in cerebrospinal fluid) is the amount of a mammalian ependymin-related protein 1 (human) when measured in cerebrospinal fluid. Also known as: cerebrospinal fluid mammalian ependymin-related protein 1 (human) amount.