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. 2012 May 25;7(5):e37213. doi: 10.1371/journal.pone.0037213

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Amselem et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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(A) Friction coefficient , and effective force terms (B) , and (C) as a function of the gradient. The error bars indicate the standard deviation in (A) and the 95% confidence intervals in (B) and (C). As in Fig. 1D, the data point displayed at very low gradient values (nM/m) corresponds to an experiment where no gradient of cAMP was applied.

Inline graphic — (A) Friction coefficient , and effective force terms (B) , and (C) as a function of the gradient. The error bars indicate the standard deviation in (A) and the 95% confidence intervals in (B) and (C). As in Fig. 1D, the data point displayed at very low gradient values (nM/m) corresponds to an experiment where no gradient of cAMP was applied.