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治疗疟疾的青蒿素是怎么发现的？
青蒿素的发现是基于传统中医药典籍的启发、现代科学方法的验证以及对提取物的深入研究，具体原因如下：
1、古代文献启发：中国古代医学典籍《肘后备急方》中记载了使用青蒿治疗疟疾的方法，这为科学家提供了研究方向和初步依据。
2、现代科学验证：科学家屠呦呦等人对青蒿进行了系统的现代科学研究，通过实验验证了青蒿的提取物对疟原虫的抑制作用，并确定了其有效成分。
3、深入研究与优化：在确定了青蒿的有效成分后，科学家们对其进行了深入研究和优化，最终成功提取并合成了青蒿素，使其成为治疗疟疾的有效药物。
总结：青蒿素的发现是基于传统中医药典籍的启发、现代科学方法的验证以及对提取物的深入研究。
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