Figure 2From: Critical role of surface chemical modifications induced by length shortening on multi-walled carbon nanotubes-induced toxicity Measurement of CNT length and external diameter. Determination of length (panel a) and external diameter (panel d) distributions of S- and L-CNT. TEM images of S-CNT (panel b and e) and L-CNT (panel c and f). Black arrows point toward iron-based nanoparticles.Back to article page