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Influence of Au@Ag NRs on lung tissue. (A) IL-1β level in the lungs from mice received multiple administration of Au@Ag NRs. IL-1β was stained with red and indicated by red arrows, and the nucleus was stained with blue; (B) the level of tyrosine hydroxylase (TH) expression in the lungs visualized by immunofluorescence histochemistry. TH was stained with red and indicated by red arrows, and the nucleus was stained with blue. The inset in orange box is a magnification of the white box.
