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Negative-ion ESI-CID-MS/MS product-ion spectra of linear gluco-tetrasaccharides with mixed linkages and branched gluco-decasaccharides. (A) Pullu-4 (α1,6,1,4,1,4 linkages). (B) Barley-4c (β1,4,1,3,1,4 linkages). (C) Barley-4-b (β1,4, 1,4, 1,3 linkages). (D) HE-10B2. (E) HE-10B3. (F) HE-10B5.
