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. 2009 Mar 3;9:24. doi: 10.1186/1471-2229-9-24

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Copyright © 2009 Schenk et al; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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SDS-PAGE analysis of birch pollen extracts. (Lane 1) B. chichibuensis, (2) B. costata, (3) B. nigra, (4) B. lenta and (5) B. pendula. Bands of allergens that were analyzed and identified with Q-TOF LC-MS/MS are indicated by arrows. (M) LMW size marker proteins.