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. 2020 Jul 23;10:12287. doi: 10.1038/s41598-020-69292-5

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as 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 images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Microscope images of the surfaces of carbon steel coupons exposed for 21 days to (a) control (b) P. balearica CCC-IOB3 (c) E. roggenkampii CCC-SPP14 (d) S. chilikensis CCC-APB5. 2D image of the total surface (left image) and 3D images of 0.38 mm² of the coupon surface (middle and right image). Images taken with the Alicona InfiniteFocus G4 at a lens magnification of × 5 and × 20 (IFM version 3.5).