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Pericyte proliferation and PDGFR-β mRNA expression after treatment with 30 ppm AuNPs for 24 h. Representative images are shown for the control group (A) and the 30 ppm AuNP-treated pericyte group (B). The graphs show the Ki-67 (C) and PDGFR-β (D) mRNA expression levels. *** p < 0.001. Bar: 100 nm.
