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Fig. 1 | Respiratory Research

Fig. 1

From: Tobacco and menthol flavored nicotine-free electronic cigarettes induced inflammation and dysregulated repair in lung fibroblast and epithelium

Fig. 1

Tobacco flavored e-cig induced inflammatory responses in lung fibroblast

HFL-1 cells exposed to air, PG/VG, or tobacco flavored e-cig for 10 min, and then cultured for 2 days. (A). Representative pictures of HFL-1 cells were taken under 20x microscope. (B). Cell number and viability was measured by AO/PI staining. (C) Conditioned medium was collected for IL-6, IL-8 and TGF-β analysis. Data presented as mean ± SEM (n = 6–9. * P < 0.05, ** P < 0.01, vs. air)

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