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. Author manuscript; available in PMC: 2015 Oct 11.
Published in final edited form as: Nanoscale. 2011 Nov 24;4(2):421–424. doi: 10.1039/c1nr11469g

Fig. 1.

Fig. 1

A) Chemical structures of SV119 and (+)-pentazocine with specific binding to sigma-2 and sigma-1 receptors, respectively; B) flow cytometry analyses of MDA-MB-435 cells that were pretreated with SV119 or (+)-pentazocine for 1 h and then incubated with SW120 (50 nM) for 0.5 h (as a control, the cells were also directly incubated with SW120 for 0.5 h); C) a typical TEM image of the Au nanocages; and D) flow cytometry data showing internalization of SW120 by MDA-MB-435 cells in the absence and presence of SV119-PEG-AuNCs (1.2 nM).