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. 2018 Jan 10;13:4. doi: 10.1186/s13023-017-0757-3

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© The Author(s). 2018

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 2 — Mass spectrometric analysis of transferrin (TF). Patient 3 (a) and control (b) sera were analyzed using LC-MS analysis. Deconvoluted masses of intact serum TF from full scans are shown. TF masses representing confirmed glycoconjugate structures are indicated with respective schematic glycoconjugate structures (blue squares, N-acetylglucosamine; green circles, mannose; yellow circles, galactose; pink diamonds, sialic acid (NeuAc); red triangles, fucose; white circles, hexose) where deviating masses are indicated with letters and suggested structures are shown beside