Fig. 4.

Representative images of MU5AC (black dots)-stained bronchial tissues at weeks 5, 7, and 9 after air-lift. Representative images of bronchial cultures obtained from 5 different donors stained at different time points after air-lift with a MU5AC primary antibody conjugated to Alexa Fluor 555 (black spots). Three technical replicates were used for immunofluorescence analysis per time point. Each image is composed of 4 contiguous fields of view. Magnification: 10×. Scale bar: 400 μm.