. . . "Measurement of methionine enkephalin and leucine enkephalin in rat brain regions by high-performance liquid chromatography with coulometric electrochemical detection"@nl . . . . . "art\u00EDculu cient\u00EDficu espubliz\u00E1u en setiembre de 1989"@ast . . . "\u043D\u0430\u0443\u043A\u043E\u0432\u0430 \u0441\u0442\u0430\u0442\u0442\u044F, \u043E\u043F\u0443\u0431\u043B\u0456\u043A\u043E\u0432\u0430\u043D\u0430 \u0443 \u0432\u0435\u0440\u0435\u0441\u043D\u0456 1989"@uk . . . . . . . . . . . "Measurement of methionine enkephalin and leucine enkephalin in rat brain regions by high-performance liquid chromatography with coulometric electrochemical detection"@nl . . . . . . . . . "S R George" . "Measurement of methionine enkephalin and leucine enkephalin in rat brain regions by high-performance liquid chromatography with coulometric electrochemical detection"@en . . . . "Measurement of methionine enkephalin and leucine enkephalin in rat brain regions by high-performance liquid chromatography with coulometric electrochemical detection"@en . . . "C Kim" . . "494" . . . "Measurement of methionine enkephalin and leucine enkephalin in rat brain regions by high-performance liquid chromatography with coulometric electrochemical detection"@en . . "1989-09-01T00:00:00Z"^^ . . . . . . . . . . . . . . . "R Cheng" . . . . . . "Measurement of methionine enkephalin and leucine enkephalin in rat brain regions by high-performance liquid chromatography with coulometric electrochemical detection"@en . . "2584346" . . . . "scientific article published on 01 September 1989"@en . . . . . "Measurement of methionine enkephalin and leucine enkephalin in rat brain regions by high-performance liquid chromatography with coulometric electrochemical detection"@nl . . "67-76" . "10.1016/S0378-4347(00)82657-2" . . . "wetenschappelijk artikel"@nl . . .