TOKYO (AP) -- A Japanese government-funded laboratory says it has found "inappropriate handling" of data in a widely heralded stem-cell research paper, but has yet to discover anything that amounts to misconduct.
Officials of RIKEN research institute released an interim report Friday at a packed news conference in Tokyo.
It said an investigative committee did not find any misconduct in two of the six parts of the paper it is scrutinizing.
RIKEN's president said it may still request the withdrawal of articles about the research published in the scientific journal Nature.
RIKEN and Nature are investigating allegations of duplicated images of DNA fragments and partial plagiarism.
The results were seen as a possible groundbreaking method for growing tissue to treat illnesses such as diabetes and Parkinson's disease using a simple lab procedure.