Table 1.9.5-B 
Types of Nasal and Bronchial Epithelial Cells Recovered by Brush of Normals 
. 
and Individuals 
with Cystic 
Fibrosis 
Site 
Study 
group 
n 
Total number 
of cells 
recovered per 
brush 
Proportion of Epithelial Cells Recovered 1 
Ciliated 
(%) 
Basal 
(%) 
Secretory 
(%) 
Undifferentiated 
Columnar 
f%) 
Nasal 
Normal 
25 
1 . 3±0 . 3xl0 5 
64±3 
11±1 
15±2 
10±1 
CF 
12 
1. 9±0 . 3xl0 5 
61±3 
13±1 
15±2 
11±1 
Bronchial 
Normal 
70 
4 . 4±0 . 2xl0 5 
79+1 
12±1 
4±1 
5±1 
CF 
22 
10 . 8±1 . 5xl0 5 
60±2 
15±1 
8±1 
16±1 
asal brush, normal vs CF, no difference in the proportions of all categories (p>0.1, all 
comparisons); bronchial brush, normal vs CF, significant difference in the proportion in 
all categories (p<0.01, all comparisons). See reference Trapnell et al , 1991, Danel et al., 
1992 for details on methods. 
Recombinant DNA Research, Volume 16 
[645] 
