Fig. 4
a Fluorescence images of HCT116 cells after incubation with CaCO3@Cur@ QTX125@HA for 2, 3, 4, and 5 h. b Fluorescence images of HT29 cells after incubation with CaCO3@Cur@QTX125@HA for 2, 3, 4, and 5 h. Cur was labeled with Rhodamine B (shown in red), while cell nuclei were labeled with Hoechst 33,342 (shown in blue). The scale bars present 100 μm