Fig. 5
![Fig. 5](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12931-018-0915-8/MediaObjects/12931_2018_915_Fig5_HTML.png)
Immunostaining for BrdU (red Cy3 fluorescence) and CGRP (green FITC fluorescence) in intrapulmonary airways 48Â h after an intratracheal LPS (a, b) or sham instillation (c, d) in WT-Bl6 mice. a After LPS challenge, clustered BrdU-positive (divided) cells are observed in the epithelial layer (open arrowheads). b Additional CGRP immunostaining reveals that the intraepithelial BrdU-labeled cells are typically grouped around NEBs. c, d After a sham instillation, intraepithelial BrdU-positive cells also appear to be located in the neighborhood of NEBs (open arrowhead), but are less numerous than after LPS treatment. L: airway lumen, E: airway epithelium