肉毒毒素是一种由厌氧梭状杆菌分泌的神经外毒素,为目前已知的世界最毒的生物毒素之一,0.25微克的纯肉毒毒素即可杀死一个成人。如吃了受其污染的食物,便会引起食物中毒,导致视力模糊、不能吞咽、全身麻痹以及呼吸困难而死亡。第二次世界大战时美国曾想把它作为生物战的“杀人 Botulinum toxin is a neurotoxin secreted by Clostridium difficile, one of the most toxic biological toxins in the world so far known, and 0.25 micrograms of botulinum toxin can kill an adult. Eating food contaminated with it can cause food poisoning, resulting in blurred vision, inability to swallow, generalized paralysis and breathing difficulties. When the United States wanted to use it as a biological war in the Second World War, “killings.”