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. Author manuscript; available in PMC: 2018 Jan 1.
Published in final edited form as: J Toxicol Environ Health A. 2017;80(1):53–68. doi: 10.1080/15287394.2016.1238329

Figure 1. Viability of TiO2-exposed airway epithelia.

Figure 1

Human nasal, tracheal, bronchial and alveolar epithelial cells were exposed to various concentrations of TiO2-NP (A) or TiO2-FP (B) for 24 hr. Relative cell viability was measured by the MTT assay. Data are expressed as means ± SDs of 3 independent experiments.