Divide in mildewy food inferior there still is mould toxin outside saltpetre amine, these toxin itself can cause cancer, still with inferior saltpetre amine has cause cancerous effect in coordination.

• 发霉食品中除亚硝胺外还有霉菌毒素，这些毒素本身可以引起癌症，还与亚硝胺有协同致癌作用。