The Journal of Neuroscience has received the results of an investigation conducted by Nanjing Medical University, which identified misrepresentation of data in the article “Synaptic Metaplasticity through NMDA Receptor Lateral Diffusion” by Jiang Zhao, Yi Peng, Zhuo Xu, Rong-qing Chen, Qin-hua Gu, Zheng Chen, and Wei Lu, which appeared on pages 3060–3070 of the March 19, 2008 issue. Because the results are not reliable, The Journal is retracting the paper.