Figure 11

Particle burden data at day 7 and the relationship to pathology. A) Particle burden data for the four MWCNT instillation conditions at day 7. Data expressed as mean ± SEM percent tissue with particle. Asterisks indicate significance *** at P < 0.001, ** at P < 0.01 compared to Vehicle. Daggers indicate significance †† at P < 0.01, † at P < 0.05 compared to the original narrow/short MWCNT variant. B) Regression of day-7 particle retention verses day-7 pathology score for the MWCNT instillation conditions.