Fig. 14
From: Penetration of CdSe/ZnS quantum dots into differentiated vs undifferentiated Caco-2 cells
Transepithelial transport of cadmium. Differentiated Caco-2 cells were incubated for 3 days with QD-COOH or QD-NH2 using a concentration of 45 µg cadmium ml−1. Cadmium translocation into the lower well was measured using ICP-MS. The precision of the assay was \(\le\) 5 % RSD (n = 5) and method accuracies were between 93.6 and 108.7 %. *Cadmium retrieval in ThinCert™ after 3 days exposure was measured using ICP-OES