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. 2017 May 23;8:287. doi: 10.3389/fphar.2017.00287

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Copyright © 2017 Yang, Fang, Chen, Zhang, Xie, Chen, Liu and Yuan.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

PMC Copyright notice

Schematic illustration of the proposed PEOBS for catalysts separation and recycling. Adapted with permission (Liu et al., 2014). Copyright 2014, WILEY-VCH.