An<unk>  is an artificial protein consisting of a targeting portion linked to a toxin. When the protein binds to that cell, it is taken in through endocytosis, and the toxin kills the cell. They are used for the treatment of some kinds of cancer and a few viral infections.
Immunotoxin
Toxin
Immunoconjugate
Mycotoxin
Toxicophore
Neurotoxin
Chlorotoxin
Phototoxin