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Morphological observation using inverted light microscopy. PBMCs were incubated with (B) 300 ng/g, (D) 1000 ng/g and (E) 3000 ng/g AgNPs for 28 days. (A) Cells without nanoparticle supplementation served as a negative control. (C) and (F) Magnified section of (B) and (E), respectively. White arrows indicate filopodia and lamellipodia.
