The nanorobots based on multiwalled carbon nanotubes (MWCNTs) functionalized with anti-epithelial cell adhesion molecule antibody (anti-EpCAM mAb) and enriched by Fe3O4 particles have shown significant cytotoxicity effect against human colorectal carcinoma (HCT116) indicating efficiency of delivery compared to free DOX. Here, EPCAM is linked to colorectal carcinoma.