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. 2021 Mar 25;8:610407. doi: 10.3389/fmolb.2021.610407

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Copyright © 2021 Shabalina, Skorova, Chudakova, Anikin, Reshetov, Mynbaev and Petersen.

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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Three zones of cellular migration from MCTS. Representative image of the MCTS on plastic at the time point 24 h with zonal segmentation to S0, S1, and S2 areas characterized by different optical density of cell layers.