From: Divergent expression of claudin -1, -3, -4, -5 and -7 in developing human lung
Claudin type | Pseudo-glandular period day 52-week 16 13 cases (scores/number of cases) | Canalicular period weeks 16-28 17 cases (scores/number of cases) | Saccular period weeks 28-36 9 cases (scores/number of cases) | Alveolar period weeks 36-40 8 cases (scores/number of cases) |
---|---|---|---|---|
Claudin-1 | Â | Â | Â | Â |
bronchus | +/10, ++/3 | +++/17 | ++/8, +++/1 | ++/1, +++/7 |
bronchioles | Â | +/5, ++/12 | +/8, ++/1 | ++/5, +++/3 |
   - large | +/13 |  |  |  |
   - small | negative/13 |  |  |  |
alveolus | # negative/13 | negative/17 | negative/9 | negative/8 |
endothelial cell | negative/13 | negative/17 | negative/9 | negative/8 |
Claudin-3 | Â | Â | Â | Â |
bronchus | +++/13 | +++/17 | +++/9 | +++/8 |
bronchiolus | ++/6, +++/7 | +++/17 | +++/9 | +++/8 |
alveolus | # +/4, ++/9 | * +/8, ++/9 | & +/7, ++/2 | & +/7,++/1 |
endothelial cell | negative/13 | negative/17 | negative/9 | negative/8 |
Claudin-4 | Â | Â | Â | Â |
bronchus | +++/13 | +++/17 | +++/9 | +++/8 |
bronchiolus | +++/13 | +++/17 | +++/9 | +++/8 |
alveolus | # +/3, ++/10 | * +/4, ++/13 | & +/5 ++/4 | & +/2 ++/6 |
endothelial cell | negative/13 | negative/17 | negative/9 | negative/8 |
Claudin-5 | Â | Â | Â | Â |
bronchus | +/13 | +/17 | +/9 | +/8 |
bronchiolus | +/13 | +/17 | +/9 | +/8 |
alveolus | # +/13 | * +/17 | negative/9 | negative/8 |
endothelial cell | +++/13 | +++/17 | +++/9 | +++/8 |
Claudin-7 | Â | Â | Â | Â |
bronchus | +++/13 | +++/17 | +++/9 | +++/8 |
bronchiolus | ++/3, +++/10 | +++/17 | +++/9 | +++/8 |
alveolus | # +/13 | * +/7,++/9, +++/1 | & +/8, ++/1 | & +/8 |
endothelial cell | negative/13 | negative/17 | negative/9 | negative/8 |