2',3'-cyclic nucleotide 3'-phosphodiesterase, an oligodendrocyte-Schwann cell and myelin-associated enzyme of the nervous system.Sprinkle TJ. 2',3'-Cyclic nucleotide 3'-phosphohydrolase (E.C. 3.1.4.37; CNPase) is a myelin-associated enzyme.In central and peripheral nervous system tissues, the enzyme is localized almost exclusively in the two cell types that elaborate myelin, the oligodendrocyte and the Schwann cell, respectively.',3'-Cyclic nucleotide 3'-phosphohydrolase (E.C. 3.1.4.37; CNPase) is a myelin-associated enzyme.