Table 3.

The IHC data, regarding each pathologic diagnosis. The number of cells represents the number of cells (whether stained or not) in each square, as described in the methods. Each square in all slides was approximately equal to 0.7980 mm². The number of bronchioles is represented in a slide observed in a low-power field view.

	P63 staining		CK5 staining		Number of bronchioles (intact + injured)	Percent of patients with vanished bronchioles
	Mean number of cells (± S D)	Percent of stained cells (± S D)	Mean number of cells (± S D)	Percent of stained cells (± S D)
Constrictive bronchiolitis	9.62 ± 3.19	39.12 ± 15.88	10.27 ± 2.65	26.40 ± 13.80	2.63 (2.00 + 0.63)	75.0
Chronic cellular bronchiolitis	18.24 ± 2.00	47.38 ± 24.00	13.99 ± 2.56	57.72 ± 7.30	2.25 (1.75 + 0.50)	33.3
Hypersensitivity pneumonitis	13.08 ± 3.26	47.22 ± 6.15	12.08 ± 3.25	55.74 ± 31.30	2.80 (2.60 + 0.20)	25.0
Respiratory bronchiolitis	13.71 ± 3.35	50.17 ± 38.24	11.33 ± 6.85	39.79 ± 33.67	2.25 (1.75 + 0.50)	0
Neuroendocrine bronchiolitis	18.57	26.67	19.14	15.85	3.00 (2.00 + 1.00)	100.0
Nonspecific bronchiolitis	12.15	40.73	10.29	39.92	2.00 (1.00 + 1.00)	100.0