Figure 3: Qualitative chemical analysis of NPs detected inside sea urchin larvae. Histograms show the background-corrected Energy Dispersive Spectroscopy (EDS) spectra recorded from agglomerates. The presence of Si, Sn, Ce and Fe peaks in the spectra indicates that the agglomerates are formed by the SiO2, SnO2, CeO2 and Fe3O4 NPs, respectively.
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