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. 2020 Sep 4;1:56–69. doi: 10.1016/j.crtox.2020.08.002

Fig. 1.

Fig. 1

Representative histological sections of bronchial cultures at weeks 5, 7, and 9 after air-lift. Representative images of bronchial culture sections stained with hematoxylin, eosin, and Alcian blue from samples collected 5, 7, and 9 weeks after air-lift. Three technical replicates were used for histological analysis per time point. Black arrows show the non-differentiated cells located between the differentiated and basal cells. Magnification: 20×. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)