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. 2018 Aug 17;9(8):409. doi: 10.3390/mi9080409

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© 2018 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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(a) Photograph taken during the testing of a laser-manufactured microfluidic device; (b) zoomed image of the microstructure partially filled in with water. This image was obtained using a Leica optical microscope.