Fig. 2
From: Primary genotoxicity in the liver following pulmonary exposure to carbon black nanoparticles in mice
Number of neutrophils detected in BAL fluid following intratracheal instillation of 162 μg of TiO2, CeO2 or CB NPs measured 1, 28 and 180 days after exposure. Particle exposed groups n = 6, vehicle control n = 6. All values are presented as mean + SD. An asterisk (*) denotes P ≤ 0.05, (**) P ≤ 0.01, (***) P ≤ 0.001 of neutrophil levels in exposed groups versus vehicle control