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Different GO coating concentration on collagen membrane from porcine dermis. (a) SEM images of uncoated, 2 μg/mL and 10 μg/mL GO-coated membranes. 4.05 k magnification. (b) Hematoxylin-Eosin staining of uncoated, 2 μg/mL and 10 μg/mL GO-coated membranes with DPSCs after 28 days of culture. 40× magnification. Reproduced with permissions from [144,145].
