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Fig. 2 | Respiratory Research

Fig. 2

From: Sub-ohm vaping increases the levels of carbonyls, is cytotoxic, and alters gene expression in human bronchial epithelial cells exposed at the air–liquid interface

Fig. 2

The presence of cilia at the surface of the cells confirms that H292 cells were grown at the air–liquid interface (ALI). a Characterization of the ALI cell culture model. H&E staining reveals the multiple cell layers on the apical surface following 1 day of exposure to either air or butter-flavored e-cig aerosol. b Scanning electron microscopy images of representative H292 cells exposed to either air or butter-flavored e-cig aerosols for 1 day at the ALI, with a higher magnification of the cilia present at the surface of the cells. Images showed are representative for each exposure group. For air-exposed cells: a total of 38 SEM images were taken; for butter-flavored e-cig aerosol-exposed cells: a total of 53 SEM images were taken

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Respiratory Research

ISSN: 1465-993X

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