Ontology of Biological Attributes id OBA_2057713 (level of tyrosine-protein kinase receptor Tie-1 (human) in cerebrospinal fluid) is the amount of a tyrosine-protein kinase receptor Tie-1 (human) when measured in cerebrospinal fluid. Also known as: cerebrospinal fluid tyrosine-protein kinase receptor Tie-1 (human) amount.