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Table 2 Initial lung burdens of TiO 2

From: Equivalent titanium dioxide nanoparticle deposition by intratracheal instillation and whole body inhalation: the effect of dose rate on acute respiratory tract inflammation

Exposure type Whole body inhalation Intratracheal instillation
Single low dose (μg) 44.56 ± 2.85 39.24 ± 1.04
Single high dose (μg) 170.25 ± 9.15 163.58 ± 3.84
Repeated high dose (μg) 197.89 ± 8.89 179.61 ± 17.14
  1. Values are group means (n = 3–5) of NP mass doses (μg) ± standard deviation (SD) immediately following instillation and 4 hr inhalation exposures.