Corrigendum

This article refers to:

Improved oral bioavailability of poorly water-soluble indirubin by a supersaturatable self-microemulsifying drug delivery system

Chen ZQ, Liu Y, Zhao JH, Wang L, Feng NP. Improved oral bioavailability of poorly water-soluble indirubin by a supersaturatable self-microemulsifying drug delivery system. International Journal of Nanomedicine. 2012; 7:1115–1125.

Figure 1 should be as shown below:

Figure 1 Chemical structure of indirubin.

The correct caption to Figure 4 should be:

Figure 4 Molecular structures of (A) PEG 4000, (B) PVP, (C) HPMC and schematic diagrams of hydrogen bonds between indirubin and (D) PEG 4000 and (E) PVP.

Figure 4B should be as shown below:

Figure 4B Molecular structure of PVP.

Figure 4C should be as shown below:

Figure 4C Molecular structure of HPMC

Figure 4D should be as shown below:

Figure 4D Schematic diagram of hydrogen bonds between indirubin and PEG 4000.