Table 2: Queries used to obtain the studied literature corpus.

Database Query Record count ISI’s Web of Knowledge (http://wokinfo.com/) TI = (nano* OR nanotox*) AND 1802 references TS = ((pharmacokinetic* OR toxicokinetic* OR disposition OR distribution OR ADME OR pbpk OR environment*)) AND TS = (toxic*) Timespan = All Years Databases = SCI-EXPANDED Lemmatization = On PubMed (http://www.PubMed.org/) (Tissue distribution OR biodistribution OR dosimetry OR pharmacokinetics OR dermal OR oral OR inhalation OR uptake OR absorption OR route OR metabolism OR accumulation OR clearance OR renal OR hepatic OR excretion OR elimination) AND (nano* OR ultrafine*) 630 references