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U266 cell morphology assessment after 24 h of incubation with graphene family materials (GN, GO, and nGO) in comparison to the control group (C). Live images in bright field and phase contrast and after staining with May-Grünwald and Giemsa (MGG) method. All pictures in the main panel were taken under the same magnification (200×); the additional picture was taken under 400×. Part of the picture for the GN group is additionally magnified for clearer visualization of the GN flake.
