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Fucolipids with human blood group H activity were isolated from several dog small intestines. On the basis of mass spectrometry, periodate oxidation, enzyme degradation, methylation, and immunologic studies the following structure is proposed: Fucalpha(1 yields2)Galbeta(1 yields 4)Glc-NAcbeta(1 yields 3)Galbeta(1 yields 4)Glc-ceramide. The ceramide was shown by mass spectrometry to contain hydroxyhexadecanoic acid and phytosphingosine as major consitutuents.
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McKibbin et al. (1975) studied this question.
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