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. 2015 Dec 9;5:77. doi: 10.1186/s13568-015-0162-z

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© Harrasser et al. 2015

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.

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Fig. 2 — Sample preparation; ion irradiation of samples with missing irradiation of the sample’s lower surfaces (a), placement of samples in well culture plates with paraffin wax (arrow) covering the sample’s lower surface (b)