Methylation analysis of the carbohydrate portion of carcinoembryonic antigen.


The carbohydrate structural units of carcinoembryonic antigen samples isolated from four different tumors were quantitated using gas chromatography-mass spectrometery after methylation and subsequent conversion to their alditol acetates. Different carcinoembryonic antigen preparations showed some quantitative but no qualitative differences in the structural… (More)


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