与小分子的化学药物相比，蛋白质和多肽的特点是在相对较低的浓度下就有较高的特异性和活性。
In comparison with small chemical drugs, protein and peptide pharmaceuticals have high specificity and activity at relatively low concentrations.
NIH RAID主要集中于小分子物质，包括提高化疗活性的新药物。
The NIH RAID program focuses on a subset of small molecules, including new agents that improve the activity of established chemotherapeutics.
目的研究小分子有机生物碱类药物格列维克的三维结构与生理活性之间的关系。
Aim To research the relationship between the 3d structures and bio activities of gleevec.
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