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Journal of Chromatography. A|January 12, 2001
Separation of spiramycin components using high-speed counter-current chromatographyH Oka, K Harada, M Suzuki, et al.Journal of Chromatography|January 18, 1991
Foam counter-current chromatography of bacitracin. II. Continuous removal and concentration of hydrophobic components with nitrogen gas and distilled water free of surfactants or other additivesH Oka, K Harada, M Suzuki, et al.Journal of Chromatography|November 17, 1989
Foam counter-current chromatography of bacitracin. I. Batch separation with nitrogen and water free of additivesH Oka, K Harada, M Suzuki, et al.Journal of Chromatography. A|August 6, 1998
Separation of antibiotics by counter-current chromatographyH Oka, K Harada, Y Ito, et al.Journal of Chromatography|January 18, 1991
Isolation of bacitracins A and F by high-speed counter-current chromatographyK Harada, Y Ikai, Y Yamazaki, et al.Journal of Chromatography. B, Biomedical Sciences and Applications|June 6, 1997
Improvement of chemical analysis of antibiotics. XXIII. Identification of residual tetracyclines in bovine tissues by electrospray high-performance liquid chromatography-tandem mass spectrometryH Oka, Y Ikai, Y Ito, et al.Analytical Chemistry|December 15, 1991
Direct interfacing of high-speed countercurrent chromatography to frit electron ionization, chemical ionization, and fast atom bombardment mass spectrometryH Oka, Y Ikai, N Kawamura, et al.Journal of Chromatography. A|August 6, 1998
Mass spectrometric analysis of tetracycline antibiotics in foodsH Oka, Y Ito, Y Ikai, et al.Journal of Chromatography. A|August 11, 1998
Separation of lac dye components by high-speed counter-current chromatographyH Oka, Y Ito, S Yamada, et al.Journal of Chromatography|August 31, 1984
Improvement of chemical analysis of antibiotics. V. A simple method for the analysis of tetracyclines using reversed-phase high-performance liquid chromatographyH Oka, K Uno, K Harada, et al.Pageof 849