Cytospin preparations of pleural lavage cells from mice treated with short/tangled CNT (left) and long CNT (right). Arrows indicate granulocytes. Note PMN and eosinophils (arrows) indicative of inflammation in pleural leukocytes from rats exposed to the long NT only.
Donaldson et al. Particle and Fibre Toxicology 2010 7:5 doi:10.1186/1743-8977-7-5