Table 1.
Trigger | Allergen Exposure | Virus Infection | Diesel Exhaust/Ozone | Smoking |
---|---|---|---|---|
Predominant pathway | Th2, IgE | Th1, LT | Thl, LT | Thl, LT |
Predominant cell type | Eosinophils CD4 T cells | Neutrophils CD8 T cells | Neutrophils CD8 T cells | Neutrophils CD8 T cells |
LT: leukotrienes