lethal substance meaning in Chinese

致死物质

Botulinum neurotoxin serotype a produced by the clostridium botulinum , are the most lethal substances known . a single molicule can abolish the function of a nerve cell . the toxins exert their action by blocking the release of the neurotransmitter , acetylcholie , at the neuromuscular junction , the blockage of bont / a makes neuromuscular weakness and flsccid paralysis , and lead to respiratory failure and death . botulinum is a serious public heath problem in developing countries around the world
A型肉毒毒素( botulinumneurotoxinserotypea ， bont a )是由肉毒梭菌产生的一种强烈的外毒素，是目前已知最毒的天然物质，一个单分子的肉毒素分子就能阻断一个神经细胞的功能，通过阻断运动神经末梢乙酰胆碱的释放导致机体发生瘫痪，严重者发生呼吸衰竭而死亡。