主题：【已应助】求助4篇英文文献，谢谢！

【序号】：1
【作者】：John E. Wiktorowicz and Joel C. Colburn
【题名】：Separation of cationic proteins via charge reversal in capillary electrophoresis
【期刊】：electrophoresis
【年、卷、期、起止页码】：Volume 11, 1990, Pages 769-773

【序号】：2
【作者】：Kiyoshi Tsuji, Richard J. Little
【题名】：Charge-reversed, polymer-coated capillary column for the analysis of a recombinant chimeric glycoprotein
【期刊】：Journal of Chromatography A
【年、卷、期、起止页码】：Volume 594, Issues 1-2, 6 March 1992, Pages 317-324

【序号】：3
【作者】：Robert L. Cunico, Victoria Gruhn, Lilia Kresin, Danute E. Nitecki, John E. Wiktorowicz
【题名】：Characterization of polyethylene glycol modified proteins using charge-reversed capillary electrophoresis
【期刊】：Journal of Chromatography A
【年、卷、期、起止页码】：Volume 559, Issues 1-2, 18 October 1991, Pages 467-477

【序号】：4
【作者】：TOWNS, JK
【题名】：CAPILLARY ELECTROPHORETIC SEPARATIONS OF PROTEINS USING NONIONIC SURFACTANT COATED CAPILLARIES
【期刊】：ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
【年、卷、期、起止页码】：卷: 200  页: 164-ANYL  子辑: 1  出版年: AUG 26 1990