Fig. 4

Electron microscopy imaging, including scanning (S) and transmission (T) images of control (1) and treated (2)* CaCo-2 cancerous cells with fucoidan/ nanocurcumin/selenium nanoparticles. *The nanomaterials around and inside cancer cell are appointed with blue zones, whereas the emerged autophagosomes are indicated by red arrows and zones in T-2 image.