{
    "title": "Analysis of carbohydrate heterogeneity in a glycoprotein using liquid chromatography/mass spectrometry and liquid chromatography with tandem mass spectrometry.",
    "journal": "Analytical biochemistry",
    "date": "1999",
    "authors": "Kawasaki N, Ohta M, Hyuga S, Hashimoto O, Hayakawa T",
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