Figure 1.

Reconstructed gold mass with corresponding detection limits (magenta) for four different probes, PEGMUA2k/MUA (green), PEG-PSMA-I (red dot), PEG-PSMA-I with half the number of cells in the beam (red triangle) and cells with PEGMUA1kCOOH nanoparticles (light blue dots). The nanoparticles were incubated at 12.5 nM with PC3 cells for 16 h, see Figure 2 The X-ray beam-sample-intersection volume, i.e., the volume of the sample which was interrogated by synchrotron radiation was 0.0889 mm³.