Properties of cell lines after culture in semi-wet interface with mechanical stimulation.

For the mucus layer description, the cell lines with a “loose/partial” mucus layer, secretes mucus, which can be found in loose globs but not as an adherent mucus layer, the ones with a thin mucus layer corresponds to 5–10% of the in vivo thickness, and the ones with a thick mucus layer has a thickness similar to in vivo.