Fig. 4. Cellular uptake of rhodamine B tagged placebo CasNPs in the LN18 cell line after 4 h (A) using confocal light scanning microscopy; uptake study showing the 3D raft of LN18 using confocal light scanning microscopy for the control (B) and placebo CasNPs (C); cellular viability assay shown in LN18 cells with different doses for the control, placebo CasNPs, Gen, ICG, ICG-Gen@CasNPs without NIR light (D) and with NIR light (E); and in C6 without NIR light (F) and with NIR light exposure (G).