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Negative-ion ESI-CID-MS/MS product-ion spectra of gluco-disaccharides and linear gluco-heptasaccharides with homo-linkages. (A) Kojibiose with an α1,2-linkage. (B) Nigerose with an α1,3-linkage. (C) Maltobiose (Malto-2) with an α1,4-linkage. (D) Isomaltobiose with an α1,6-linkage. (E) Cyano-7 with α1,2-linkages. (F) Lam-7 with β1,3-linkages. (G) Malto-7 with α1,4-linkages. (H) Dext-7 with α1,6- linkages.
