Fig. 1: Potential elimination of PS NPs through urine and faeces.
From: Size-dependent translocation of polystyrene nanoplastics across biological barriers in mammals

The cumulative percentage of 14C in the a urine and b faeces on days 1–19 post the administration of PS20 or PS100 via oral gavage (OG), intratracheal aerosolization (ITA), or intravenous injection (IVI). All data (mean ± standard deviation, n = 3) are displayed as the cumulative percentage of 14C radioactivity in the specific excreta normalized to the total radioactivity of 14C administered to the rats. All data points include error bars, some of which are small and obscured by the data point symbols.