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. 2014 Apr 23;14:102. doi: 10.1186/1471-2180-14-102

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Copyright © 2014 Martín-Rodríguez 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 credited. 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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Representative force-distance curves. (A) Representative force-piezo displacement measured on mica (black) and on top of single bacteria grown in MH2 (dark green) and in MB (red), obtained in seawater. Loading force-indentation depth (blue) curves resulted from subtracting black curve from the green (B) and the red ones (C) at constant loading force. Curves (B) and (C) were fitted according Hertz’s model (green) and linear model (magenta) to calculate elasticity modulus and k_B, respectively.