This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy).
This article has been retracted at the request of the Editor.
In Fig. 5A different intensities of the same image were used to represent different experimental conditions: the extent of cell death of TUNEL/Vehicle (left image) and the extent of cell death of TUNEL/Curcumin (2nd image from the left).
The article has been retracted because the data integrity has become questionable.