TABLE 2.

AIRWAY WALL LEUKOCYTE POPULATIONS AFTER 8 WK OF NTHi EXPOSURE

Cell Type	Marker	Frequency (%)
Macrophage	CD68	32.0 ± 5.3
B cell	CD20	25.3 ± 7.5
T cytolytic	CD8	13.5 ± 6.7
Neutrophil	p40	9.7 ± 1.7
T helper	CD4	2.3 ± 0.3
Total		82.8

Definition of abbreviation: NTHi, nontypeable Haemophilus influenzae.

Immunohistochemical markers associated with nuclei are recorded as percentage ± SEM of total nuclei in the airway wall other than those of epithelial and endothelial cells.