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药物的研究与发展必须区别“药物的发现”和“药物的优化（Optimization）”这两个概念。生物化学、药理学及分子生物学在药物的发现过程中起着关键作用。基因和生物技术对于受体和酶的表达以及克隆化显得越来越重要。合理而经济的药物研究必备的先决条件是分离生物靶点，并用
The research and development of drugs must distinguish the two concepts of “drug discovery” and “drug optimization.” Biochemistry, pharmacology and molecular biology play a key role in the discovery of drugs. Genes and biotechnology are increasingly important for the expression and cloning of receptors and enzymes. A prerequisite for rational and economical drug research is the isolation of biological targets and their use