Retraction notice to “Apoptotic cell death: A possible key event in mediating the in vitro anti-proliferative effect of a novel copper(II) complex, [Cu(4-Mecdoa) (phen)₂] (phen = phenanthroline, 4-Mecdoa = 4-methylcoumarin-6, 7-dioxactetate), in human malignant cancer cells” [Eur. J. Pharmacol. 569 (2007) 16–28, (S0014299907005432), (10.1016/j.ejphar.2007.04.064)]

This article has been retracted: please see Elsevier policy on Article Correction, Retraction and Removal (https://www.elsevier.com/about/policies-and-standards/article-withdrawal). This article has been retracted at the request of the authors and Editor-in-Chief. The authors contacted the journal in April 2012 to request the retraction of the above article, citing concerns that they could no longer guarantee the accuracy of certain figures within the paper. A subsequent inhouse investigation found the image duplications between Figs. 6–8, 10 and the images from several other articles, including. • An in vitro investigation of the induction of apoptosis and modulation of cell cycle events in human cancer cells by bisphenanthroline-coumarin-6,7-dioxacetatocopper (II) complex”. Chemico-Biological Interactions 168 (2007) 143–158. https://doi.org/10.1016/j.cbi.2007.04.003• A study of the role of apoptotic cell death and cell cycle events mediating the mechanism of action of 6-hydroxycoumarin-3-carboxylatosilver in human malignant hepatic cells”. Cancer Letters 250 (2007) 128–139. https://doi.org/10.1016/j.canlet.2006.10.015Further details are available in the related PubPeer report: https://pubpeer.com/publications/00B38D0A72B52F6F977A23BDC8394A?utm_source=Chrome&utm_medium=BrowserExtension&utm_campaign=Chrome. The Editors have reviewed the case and have decided to retract the article. The Publisher wishes to apologise to the authors for the delayed retraction.