Table 2.

Mean percentage of lineage-labeled keratin 14-positive cells ± SEM in different regions of porcine conducting airway over a time period of 90 days (%).

Time	Proximal trachea	Middle trachea	Distal trachea	Bronchus	Bronchioles
1 day	24.93 ± 2.38	29.29 ± 1.90	22.63 ± 2.30	12.70 ± 1.80	20.82 ± 5.61
30 days	6.71 ± 0.20	5.86 ± 0.34	2.54 ± 0.54	1.12 ± 0.33	0.68 ± 0.46
60 days	0.54 ± 0.06	0.28 ± 0.08	0.48 ± 0.07	0.56 ± 0.02	0.18 ± 0.10
90 days	0.00 ± 0.00	0.04 ± 0.04	0.01 ± 0.01	0.00 ± 0.00	0.00 ± 0.00