Figure 1.
Comparison of pulmonary inflammation markers induced by inhalation exposure to 5 mg/m3 multi-walled carbon nanotube for 5 h per day for 1, 3, or 4 days. (a) Cell counts of polymorphonuclear leukocytes were used as an indicator of inflammation. Values are given as means ± SE (n = 8). * indicates that PMN influx for that group was significantly higher than control (p < 0.05). (b) Bronchoalveolar lavage fluid lactate dehydrogenase (LDH) was used as a marker of cytotoxicity. Values are given as means ± SE (n = 8). * indicates that LDH activity for that group was significantly higher than control (p < 0.05). (c) Bronchoalveolar lavage fluid albumin concentrations were used as a marker of alveolar air/blood barrier damage. Values are given as means ± SE (n = 8).