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. 2019 Dec 23;10:1508. doi: 10.3389/fphar.2019.01508

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Copyright © 2019 Mao, Lin, Zhang and Qin

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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The photos of each HepG2 cells group under laser confocal microscope (×400) (A). Calculation of slope by curve fitting of intracellular Ca²⁺ fluorescence intensity dynamics (0–150 s) (B). Changes of intracellular Ca²⁺ fluorescence intensity in HepG2 cells(0–1000 s) (C).