Fluorescent imaging result of BMP-4 expression on the branch.
(A) Fluorescent images of nucleus and BMP-4 on developed branches from NHBE clot. BMP-4 expression was observed over the cell clot and branches. Scale bars 100 μm. (B) Comparison of fluorescent intensity of BMP-4 expression from homogeneously distributed NHBE and from NHBE cell clot with branches after day 7. The intensity from cell clot is higher than from homogeneously distributed NHBE (p = 0.014). Exposure time 300 ms. (n = 6).