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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 3. NGF protein expression in TiO2-exposed airway epithelia.

Figure 3

Human nasal (A), tracheal (B), bronchial (C), and alveolar (D) epithelial cells exposed to TiO2-NP or TiO2-FP were stained with anti-human rabbit polyclonal NGF primary antibody and anti-rabbit secondary antibody, and changes in intracellular protein expression were measured by FACS. Mean fluorescent activity (MFI) data are expressed as means ± SDs of 3 independent experiments. *p<0.05; compared to control cells not exposed to TiO2. ‡p<0.05 compared to cells exposed to TiO2-FP.