Figure 3: Near-edge X-ray absorption spectra at arsenic K-edge obtained in the cytoplasm, mitochondrial network, and nucleus of IGROV1 cells exposed to 9 μM As, and labeled with Rhodamine 123, a probe for mitochondrial network imaging (center image obtained by confocal microscopy). Each XANES spectrum is the sum of N=5 energy scans of the same cellular area. Left and right spectra correspond, respectively, to the zones analyzed on the left and right cells (white bars). Reprinted with permission from [16].