植物中的转录后基因沉默(PTGS)是RNA沉默的一种形式，通过PTGS能对目标RNA进行特异性降解。
Posttranscriptional gene silencing (PTGS) in plants is a form of RNA silencing by which target RNA is degraded in a sequence-specific manner.
摘要 ：磷壁酸是革兰氏阳性细菌细胞壁的重要成分，磷壁酸酶是一种特异性地降解磷壁酸的磷酸二酯酶。
Abstract : Teichoic acids are important components of cell wall in gram-positive bacteria, and teichoicase is exactly the enzyme that can degrade teichoic acids specifically.
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