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Immunofluorescence of the child's other organs. The first column shows cells nuclei using DAPI staining. SARS-CoV-2 S (spike) protein was not observed, as shown in the second and third columns. Images were obtained by confocal microscopy (Leica SP8) at 400 × and 630 × and processed using ImageJ. The same protocol described in Figure 3 was used to perform immunofluorescence.
