This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy).
This article has been retracted at the request of the Editor.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 Figs. 6B and 6E the images of ß-actin were reused to represent different experimental conditions: as the loading control for a concentration dependency study of dibenzoylmethane (DBM; Fig. 6B) and as the loading control for a concentration dependency study of dibenzoylpropane (DBP; Fig. 6E).
The article has been retracted because the data integrity has become questionable.