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SICM topography images of fixed HEK293H cells. (A, B) Topography of the cell membrane surface of the fixed HEK293H cell with (A) and without (B) 90 min treatment of 10 μM K2CrO4. The red arrows in (A) show damaged sites on the cell membrane. (C) RMS surface roughness of treated and untreated HEK293H cells. Treated vs untreated, “*” P < 0.05.
