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Ti/P content in the three epithelial models a
| Cell model | Ti/P b |
|---|---|
| Caco-2 monoculture |
0.020 ± 0.012 |
| Caco-2/HT29-MTX coculture |
0.108 ± 0.047 |
| Caco-2/RajiB coculture | 0.183 ± 0.039 |
aTi and P content were measured locally, by μPIXE, in Ti-rich regions detected in Ti distribution maps, in cells exposed to 50 μg/mL of TiO2-NPs for 24 h. bRatio of titanium (Ti) and phosphorous (P) concentrations.
