Retraction to: Apoptosis (2011) 16:27–34 https://doi.org/10.1007/s10495-010-0537-1

The Editors-in-Chief have retracted this article [1]. Concerns were raised regarding a number of images, specifically:

Figure 2b (Caspase 3) appears to partly overlap with Fig. 4g (Cytochrome C (mitochondria)).

Figure 2b (Caspase 9) appears to partly overlap with Fig. 4g (Cytochome C (cytosol)).

Figure 3a (NPC-16 treated HepG2 cells) appear to partly overlap with Fig. 3a (control image of Hela cells) of [2].

Figure 4d (14-3-3) appears to overlap with Fig. 7 (p27Kip1) of [3].

Additionally, there is considerable textual overlap with [2]. The data reported in this article are therefore unreliable.

Authors Chao-jie Wang and Song-qiang Xie disagree with this retraction. The Editor was not able to obtain current email addresses for the other authors.