Fig. 1From: Uptake of label-free graphene oxide by Caco-2 cells is dependent on the cell differentiation statusScanning electron microscopy (SEM) images of applied GO (A, B) and GNP (C). Images show morphology of GRM on glass slides after incubation in supplemented cell culture medium for 24 h in the presence of undifferentiated Caco-2 cells (cells not shown)Back to article page