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<front>
<journal-meta>
<journal-id journal-id-type="nlm-ta">Molecular Medicine Reports</journal-id>
<journal-title-group>
<journal-title>Molecular Medicine Reports</journal-title>
</journal-title-group>
<issn pub-type="ppub">1791-2997</issn>
<issn pub-type="epub">1791-3004</issn>
<publisher>
<publisher-name>D.A. Spandidos</publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="doi">10.3892/mmr.2021.12079</article-id>
<article-id pub-id-type="publisher-id">MMR-0-0-12079</article-id>
<article-categories>
<subj-group>
<subject>Retraction</subject>
</subj-group>
</article-categories>
<title-group>
<article-title>Anticancer and apoptotic activities of oleanolic acid are mediated through cell cycle arrest and disruption of mitochondrial membrane potential in HepG2 human hepatocellular carcinoma cells</article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author"><name><surname>Zhu</surname><given-names>Yue-Yong</given-names></name></contrib>
<contrib contrib-type="author"><name><surname>Huang</surname><given-names>Hong-Yan</given-names></name></contrib>
<contrib contrib-type="author"><name><surname>Wu</surname><given-names>Yin-Lian</given-names></name></contrib>
</contrib-group>
<pub-date pub-type="ppub">
<month>06</month>
<year>2021</year></pub-date>
<pub-date pub-type="epub">
<day>12</day>
<month>04</month>
<year>2021</year></pub-date>
<volume>23</volume>
<issue>6</issue>
<elocation-id>440</elocation-id>
<permissions>
<copyright-statement>Copyright: &#x00A9; Zhu et al.</copyright-statement>
<copyright-year>2021</copyright-year>
<license license-type="open-access">
<license-p>This is an open access article distributed under the terms of the <ext-link ext-link-type="uri" xlink:href="https://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution License</ext-link>, 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.</license-p></license>
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</front>
<body>
<p>Mol Med Rep 12: <related-article xmlns:xlink="http://www.w3.org/1999/xlink" related-article-type="retracted-article" vol="12" page="5012" id="RA1" xlink:href="10.3892/mmr.2015.4033" ext-link-type="doi">5012-5018</related-article>, 2015; DOI: 10.3892/mmr.2015.4033</p>
<p>Following the publication of the above paper, a concerned reader drew to the Editor&#x0027;s attention that several figures (principally, Figs. 3, 6 and 8) contained data that bore striking similarities to data published in other papers, some of which had been published around the same time and written by different authors based at different research institutions.</p>
<p>After having conducted an independent investigation in the Editorial Office, the Editor of <italic>Molecular Medicine Reports</italic> has determined that this article should be retracted from the Journal on account of a lack of confidence concerning the originality and the authenticity of the data. The authors were asked for an explanation to account for these concerns, but the Editorial Office never received any reply. The Editor regrets any inconvenience that has been caused to the readership of the Journal.</p>
</body>
</article>
