1. Baggs RB, Ferin J, Oberdörster G. Regression of pulmonary lesions produced by inhaled titanium dioxide in rats. Vet Pathol. 1997;34(6):592–7.
2. Becker HM, Bertschinger MM, Rogler G. Microparticles and their impact on intestinal immunity. Dig Dis. 2012;30:47–54.
3. Brook RD, Rajagopalan S, Pope CA, Brook JR, Bhatnagar A, Diez-Roux AV, Holguin F, Hong Y, Luepker RV, Mittleman MA, Peters A, Siscovick D, Smith SC, Whitsel L, Kaufman JD. Particulate matter air pollution and cardiovascular disease: an update to the scientific statement from the American heart association. Circulation. 2010;121:2331–78.
4. Butz T, Reinert T, Pinheiro T, Moretto P, Pallon J, Kiss AZ, Stachura J, D¸Abro’s W, Stachura Z, Lekki J, Lekka M, Hunyadi J, Bıro T, Sticherling M, Van Vaeck L, Van Royen P, Surleve-Bazeille JE. NANODERM, Quality of skin as a barrier to ultra-fine particles, QLK4-CT-2002-02678 final report. 2007.
5. Card JW, Jonaitis TS, Tafazoli S, Magnuson BA. An appraisal of the published literature on the safety and toxicity of food-related NMs. Crit Rev Toxicol. 2011;41:22–49.