铅是人类所认识的最古老的毒物之一 ,也是迄今工作环境和生活环境中仍广泛存在的毒物。铅具有神经毒性 ,长期接触可致动物和人出现学习、记忆和情感状态等行为功能的改变 ,铅对学习记忆的影响及其细胞和分子机理的研究近年来取得了很大的进展 ,研究主要集中在 :对中枢神经系统 Lead is one of the oldest known human poison, but also the poison that is still widespread in working environment and living environment. Lead has neurotoxicity, long-term exposure can cause animals and people to learn, memory and emotional status and other behavioral changes, the impact of lead on learning and memory and its cellular and molecular mechanisms of research has made great progress in recent years, the main research Focus on: on the central nervous system