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The expression of N-glycans with multivalent Ley on human sperm and seminal plasma glycoproteins. Biantennary, (A), triantennary (B and C) and tetraantennary N-glycans (D) terminated on each antenna with Ley (Table I) are expressed on human sperm and seminal plasma glycoproteins (Pang et al., 2007, 2009). Heterogeneous intermediates terminated with different combinations of Lex, Ley or lacNAc (Galβ1-4 GlcNAc) on their antenna are also present.
