Newcastle University is standing behind its professor whose stem cell group had a paper retracted after a plagiarism charge. The paper, which described how sperm-like cells could be derived from human embryonic stem cells, was published online on 8 July by Stem Cells and Development. As ScienceInsider reported on Thursday, the journal’s editor, Graham Parker, retracted the paper on 21 July after it was discovered that several paragraphs in the introduction had been copied, without attribution, from a 2007 review article.
The paper’s corresponding author, Karim Nayernia, told ScienceInsider that the copied text was part of an old version of the paper, which the first author, a postdoc named Jae Ho Lee, mistakenly submitted. Nayernia says that as soon as he was made aware of the problem he sent Parker the correct version, without the copied text. He says that because the paper was published online before copy editing or proofreading, he and his colleagues did not realize their mistake. Nayernia says he initially received word that the journal had accepted the new draft.
Parker says, however, that “the available evidence does not substantiate the claim” of an accidental submission of the wrong manuscript. Therefore, he says, he decided to retract the paper, despite requests from Nayernia and Newcastle University to reconsider.
Newcastle University accepts Nayernia’s explanation. Late Tuesday, it released the following statement: