The article

“Protective Effects of Colivelin Against Alzheimer's Disease in a PDAPP Mouse Model”
[Cell Physiol Biochem 2016;38:1138-1146; DOI: 10.1159/000443064]
by Rong Yin, Kai Yin, ZhiQiang Guo, ZhiQiang Zhang, LiPin Chen, Li Cao, YuanMin Li, YaXuan Wei, XueFeng Fu and XiangQun Shi

has been retracted by the current and former Publisher and the Editor.

After the publication of this article, concerns were raised about what appeared to be repeated reproduction of small groups of cells within and between representative images in Figure 3A, which should reflect the results of 4 different animals.
The authors did not respond to requests to comment on the concerns and provide the raw data within the given timeframe despite multiple attempts of contact. Given the severity of the concerns raised this article is being retracted.
The authors have not responded to our correspondence regarding this retraction despite multiple attempts of contact.