Reversed-phase liquid chromatography of 5-fluoro-uracil nucleosides and nucleotides in the presence of quaternary ammonium ions von Gelijkens, C.F., De Leenheer, A.P.

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Simple method for isolating free urinary catecholamines by boric acid gel chromatography von Gelijkens, C.F., De Leenheer, A.P.

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Capillary gas chromatography of pyrimidines and purines: N,O-peralkyl and trifluoroacetyl-N,O-alkyl derivatives von Gelijkens, C.F., Smith, D.L., McCloskey, James A.

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Gas chromatographic measurement of urinary 5-fluoro-2′-deoxyuridine levels after barium salt precipitation and sephadex LH-20 cleanup von Gelijkens, C.F., De Leenheer, A.P.

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GLC Determination of Floxuridine in Plasma Using a Thermionic Nitrogen Detector von De Leenheer, A.P., Gelijkens, C.F.

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Quantification of 5-Fluorouridine in Human Urine by Capillary Gas-Liquid Chromatography with a Nitrogen-Selective Detector von De Leenheer, A.P., Gelijkens, C.F.

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Column chromatography of 5-fluorouracil on Sephadex G-10 von De Leenheer, A.P., Rigo, S.S., Gelijkens, C.F., Van Vaerenbergh, P.M.

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Quantitative mass spectrometry in biomedicine von De Leenheer, A.P., Jonckheere, J.A., Gelijkens, C.F.

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