3)Methods of drug discovery Most drugs are the result of carefully designed research programs of screening, molecular modification and mechanism based drug design. (大多数药物是精心设计的研究过程的结果,包 括:筛选、分子修饰和基于机制的药物设计。)3) Methods of drug discovery • Most drugs are the result of carefully designed research programs of screening, molecular modification, and mechanism￾based drug design. （大多数药物是精心设计的研究过程的结果，包 括：筛选、分子修饰和基于机制的药物设计。）