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Viability of EAhy926 cells assessed by formazan bioreduction (dehydrogenase activity) in the presence of NPs for 24 h. a: Small polystyrene particles (small dots) show stronger cytotoxicity than larger particles (larger dots). b: Thin CNTs (red and pink curves) show higher cytotoxicity than thick CNTs (green and blue curves). Viability is indicated related to the dehydrogenase activity of cells in the respective medium as 100%.
