We observe that the mean ( SEM) PMN response to O3 was significantly elevated in responders versus nonresponders (27 3 vs 3 2, p 0.05) which the mean (SEM) FEV1 response (% differ from CA) had not been significantly different between subject matter cohorts (-1.23% 0.8 vs -2.41% 2.1). Logistic regression analysis showed that responder… Continue reading We observe that the mean ( SEM) PMN response to O3