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. 2014 Oct 29;4:6826. doi: 10.1038/srep06826

Figure 1. Targeting mechanism of GSAO.

Figure 1

GSAO binds to dithiol molecules, which are abundant in the intracellular space and virtually absent in the extracellular space. When labelled with radioactive or fluorescent reporter molecules, GSAO cannot negotiate across the cell membrane of healthy cells (a) but gains free access through disrupted membranes of dying cells (b). Thus, GSAO accumulates in dying cells.