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. 2016 May 6;124(12):1870–1875. doi: 10.1289/EHP234

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Comparison of silver concentration in the nose (A) and olfactory bulb (B) between citrate (control) and 20- and 110-nm silver nanoparticles (AgNP) at different post-exposure days. *Significantly different from citrate control (p < 0.05). ^#Significantly different from the mean value at T0 in animals that had the same exposure (p < 0.05). Values are the mean ± SE. The level of detection is 0.011 μg Ag/g tissue. The mean value was obtained from 5 animals per particle type and time point.