Figure 5

Diffusion analysis of doxorubicin-loaded Au@GO nanoparticles in HeLa/HUVEC spheroids. Diffusion images of doxorubicin-loaded Au@GO nanoparticles in HeLa/HUVEC spheroids for 0, 1, 3, and 5 hours (A). Scale bars are 100 μm. Analysis of the fluorescence intensity of doxorubicin-loaded Au@GO nanoparticles in HeLa/HUVEC spheroids (B).