An cytotoxin could be a supermolecule toxin free by a organism that targets the intestines. Its target website is indicated among its name. Enterotoxins area unit chromosomally encoded or cellular inclusion encoded exotoxins that area unit created and secreted from many microorganism organisms. they're usually heat-stable, and area unit of low mass and soluble. Enterotoxins area unit ofttimes cytotoxic and kill cells by neutering the top membrane porousness of the tissue layer (epithelial) cells of the viscus wall. they're principally pore-forming toxins (mostly chloride pores), secreted by microorganism, that assemble to make pores in cell membranes. This causes the cells to die.