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Editorial expression of concern

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Science  14 Sep 2017:
eaap9539
DOI: 10.1126/science.aap9539

This article has a correction. Please see:

In the 15 September issue, Science published the Report “Biological fabrication of cellulose fibers with tailored properties” by F. Natalio et al. (1). After the issue went to press, we became aware of errors in the labeling and/or identification of the pigments used for the control experiments detailed in figs. S1 and S2 of the supplementary materials. Science is publishing this Editorial Expression of Concern to alert our readers to this information as we await full explanation and clarification from the authors.

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