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. 2022 Jul 7;20:319. doi: 10.1186/s12951-022-01487-6

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© The Author(s) 2022

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

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Fig. 2 — Calcium-related gene expression and calcium ion concentration in chemoresistant A2780/PTX and A549/PTX cells and sensitive counterparts A2780 and A549 cells. a Half-maximal inhibitory concentration (IC₅₀) was measured in A2780/PTX and A549/PTX and their sensitive counterparts. b–c Calcium ion concentration was determined in A2780/PTX and A549/PTX and their sensitive counterparts by flow cytometry. d–e The expression of SRI mRNA was higher in A2780/PTX and A549/PTX compared with their sensitive counterparts determined by qRT-PCR. f–g The expression of SRI protein was detected in A2780/PTX and A549/PTX and their sensitive counterparts by Western blot. PTX, paclitaxel; SRI, sorcin. **P < 0.01