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. 2019 Jun 28;10:1389. doi: 10.3389/fmicb.2019.01389

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Copyright © 2019 Ji, Wu, Zhang, Wang, Zhang, Shao, Chen and Wang.

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) and the copyright owner(s) 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.

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Confocal micrographs of panel (A) Bifidobacterium longum, (B) alginate microcapsule without B. longum, (C) alginate microcapsule with B. longum, (D) chitosan-coated alginate microcapsule without B. longum, and (E) chitosan-coated alginate microcapsule with B. longum. All samples were stained with acridine orange fluorescent dye to enable DNA detection.