Table 3. mRNA and protein levels of CYP1A1 and 1A2 and activities of CYP450s and GSTs in rat lungs treated with PM_2.5 or 9-NA.

Groups	CYP1A1 mRNA (changed fold)	CYP1A1 protein (ng mg–1 protein)	CYP1A2 mRNA (changed fold)	CYP1A1 protein (ng mg–1 protein)	GST (U mg–1 protein)	CYP450 (U mg–1 protein)
Control	1.00 ± 0.26	22.7 ± 3.9	1.00 ± 0.32	2 ± 0.14	26.1 ± 2.5	0.071 ± 0.008
PM2.5	1.44 ± 0.25*	29.7 ± 4*	1.31 ± 0.29	2.61 ± 0.3**	34.8 ± 4.3**	0.103 ± 0.016*
9-NA-1	1.25 ± 0.27	25.5 ± 4.4	1.16 ± 0.31	2.17 ± 0.2	29 ± 3	0.079 ± 0.013
9-NA-2	1.47 ± 0.37*	27.4 ± 4.2	1.38 ± 0.34	2.23 ± 0.28	32.4 ± 3**	0.086 ± 0.01
9-NA-3	1.59 ± 0.46*	31.1 ± 4.9*	1.44 ± 0.32*	2.68 ± 0.21**	36.5 ± 3.3**	0.12 ± 0.037**