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. 2021 Jul 29;3:670274. doi: 10.3389/fmedt.2021.670274

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Copyright © 2021 Rocha, Cerqueira, Varella Penteado and Córdoba de Torresi.

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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Electrical stimulation study on Saos-2 cells on PLLA/PPy/HE membranes. The arrowheads show the formation of nodules in the highest periods (Hoechst staining, bar 10 μm). Adapted from (65) with permission from the publisher.