Figure 3: Images of TGN binding efficiency via bright and fluorescence microscopy.

(a,b) BT474 and SK-BR-3 cell lines show great binding capacities of the conjugates, and the efficiency is positively related to the concentration of TGNs. (c,d) The amplified merge pictures of BT474 and SK-BR-3 cells incubated with TGNs (200 μg/ml).