TABLE 1.

BAL cell characteristics of C57Bl/6 and Mmp12 KO mice 60 day.

	Treatment	N	Total cell count (×105)	AM (X105)	LYM (×105)	PMN (×105)
C57Bl/6	PBS/Surf	10	8.0 ± 2.9	7.7 ± 2.8 [97]	0.3 ± 0.3 [3]	0.06 ± 0.09 [1]
C57Bl/6	MWCNT	10	9.8 ± 2.5	8.9 ± 2.0 [92]	0.7 ± 0.5 [6]	0.2 ± 0.2 [2]
Mmp12 KO	PBS/Surf	10	7.7 ± 2.5	7.5 ± 2.5 [97]	0.1 ± 0.1 [2]	0.05 ± 0.1 [1]
Mmp12 KO	MWCNT	10	12.0 ± 4.1*	11.1 ± 4.0 [92]*	0.4 ± 0.2 [4]	0.5 ± 0.4 [4]*

AM, alveolar macrophages; LYM, lymphocytes; PMN, neutrophils. *Means ± SD, p ≤ 0.05 compared to PBS/Surf vs MWCNT in MMP12 KO. [ ] Percentage.