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. 2016 Sep 26;14:70. doi: 10.1186/s12951-016-0222-9

Fig. 14.

Fig. 14

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 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