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(a) and the cytotoxicity test (EZ-CYTOX assay) (b) for as-made GO, DGO, GO-I, DGO-I, and PVP-I with different concentration (6.125, 12.5, 25, 50, and 100 μg/mL, respectively from left to right) for human skin cells [Fibroblast (primary human keratinocyte), Keratinocyte (immortalized fibroblast)].
