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. 2024 May 20;7:19. doi: 10.20517/cdr.2024.04

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© The Author(s) 2024.

© The Author(s) 2024. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, sharing, adaptation, distribution and reproduction in any medium or format, for any purpose, even commercially, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Effect of pentoxifylline on the expression levels of P-gp, determined by Western Blot, on (A) NCI-H460 vs. NCI-H460/R and (B) A549 vs. A549-CDR2 cell lines, treated with vehicle (H₂O) or pentoxifylline at 1.0 mM after 48 h. β-Actin was used as a loading control. Data are presented as a percentage of expression. ^*P ≤ 0.05; ^***P < 0.001. P-gp: P-glycoprotein.