Table 1.

Effect of segmental antigen challenge on NO in exhaled and lower airway gases

	Baseline, 0 min		Ag, 10 min	Ag, 48 h
	Exhaled	Lower airway	Lower airway	Exhaled	Lower airway
NO, ppb
Asthma	9  ± 1	14  ± 5	10  ± 2	15  ± 5	26  ± 7
Control	7  ± 1	5  ± 2	6  ± 2	7  ± 1	6  ± 3
P*	0.2	0.1	0.3	0.05	0.03

^*T test comparison of asthma vs. control. 

 ppb, parts per billion.