Table S1.

Bronchoalveolar lavage fluid cytokines and enzymes following resting exposure to ¹⁸O₃.

	IL-6, pg/mL	IL-8, pg/mL	tPA, IU/mL	Elastase, uM/hr	C3a, ng/mL	a1-AT, ug/mL	LDH, U/mL
Air
Mean	2.6	14.0	112	46.4	189	1.80	3.79
SE	0.2	0.7	20	19.7	111	0.30	0.24
O3
Mean	2.7	26.5	104	81.7	434	2.0	4.4
SE	0.3	12.5	13	45.3	171	0.35	0.56
O3/air	1.06	1.90	0.93	1.76	2.30	1.10	1.17

Notes: No significant changes due to ozone exposure were detected in any of the measurements (2 tailed paired t test). N = 7 subjects in all groups.