Correction to: ChemTexts (2022) 8:9 https://doi.org/10.1007/s40828-021-00159-6

We regret to inform that the labels "NPs which remain in endosomes/lysosomes" and "exocytosed NPs" had been erroneously swapped in the sketch on the right side in Figure 2. The corrected Fig. 2 is displayed below. WJP apologizes for this error.

Fig. 2
figure 2

Percentage of exocytosed diferently sized gold NPs in human primary mesenchymal stem cells (MSCs; A) and horse MSCs (B) at diferent time points. Image taken with permission from Sun et al. [24]. The NPs used here had Au cores with diameters from 5 to 100 nm and were all coated with the same polymer, viz. poly(isobutylene-alt-maleic anhydride)-graft-dodecyl (PMA)