==== Front Mol Med Rep Mol Med Rep Molecular Medicine Reports 1791-2997 1791-3004 D.A. Spandidos 37326035 10.3892/mmr.2023.13030 MMR-28-2-13030 Retraction [Retracted] Morphine‑induced delayed pre‑conditioning against anoxia/reoxygenation injury in pulmonary artery endothelial cells: The role of mitochondrial KATP channels Ding Wengang Guo Yueping Cui Xiaoguang Zhang Bing Li Dongmei Li Wenzhi 8 2023 12 6 2023 12 6 2023 28 2 143Copyright: © Ding et al. 2023 https://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited. ==== Body pmcMol Med Rep 13: 1047–1053, 2016; DOI: 10.3892/mmr.2015.4629 Following the publication of this paper, it was drawn to the Editor's attention by a concerned reader that several of the flow cytometric plots featured in Fig. 2A on p. 1050 contained repeating patterns of dots, both vertically and horizontally, in addition to a variety of other apparent anomalies. The authors were asked to provide an explanation to account for the apparent anomalies in this figure, but they did not respond to the request posed by the Editorial Office. Therefore, the Editor of Molecular Medicine Reports has decided that this paper should be retracted from the journal on account of a lack of confidence in the presented data. The Editor apologizes to the readership for any inconvenience caused.