TABLE 3.

Selenium Concentrations in Lung and Serum

		Se concentration (ppm)
Selenium (mg/kg diet)	Treatment	Lung	Serum
0.15	Control	0.104 ± 0.008a	0.109 ± 0.026a
	Smoke	0.098 ± 0.011a	0.097 ± 0.023a
0.5	Control	0.117 ± 0.005b	0.119 ± 0.021b
	Smoke	0.134 ± 0.008b	0.148 ± 0.031b
2.0	Control	0.143 ± 0.021c	0.139 ± 0.036b
	Smoke	0.169 ± 0.013c	0.161 ± 0.034b
Results of two way ANOVA (p values)
Main effect for Selenium		< 0.01	0.01
Main effect for Smoking		0.13	0.29
Selenium × Smoking interaction		0.22	0.35

Note. Results are means ± SEM. Significant differences in smoke-exposed mice for the same selenium level are indicated with an asterisk (*); for differences due to dietary selenium, values with different superscript letters are significantly different (p < 0.05).