Differences in TJ length.

<p><b>A)</b> Upper image show immunostaining of ZO-1 (green) and nuclei staining (blue). Lower image shows magnifications of representative cell borders. <b>B)</b> Ratio of persistent length to contour length of all tested cell monolayers. 16HBE14o^– shows a cell-cell contact enlargement by 40% while CFBE41o^– cells and its transfected clones exhibit only a tiny enlargement by 10%. <b>C)</b> TJ lengths per area in µm per µm². 16HBE14o^– cells show 80% longer TJ lengths per area than CFBE41o^– cells. Furthermore, there is no difference in TJ lengths per area between CFBE41o^– cells and its transfected clones. Results are presented as mean ± SD (n = 7–8, p<0.05).