Objective: To investigate the expression of secreted protein acidic and rich in cysteine (SPARC) in cervical carcinoma and its relationship with biological behavior of cervical carcinoma.
目的：探讨富含半胱氨酸的分泌型酸性蛋白(SPARC)在宫颈癌中的表达变化及其与宫颈癌生物学行为的关系。
As another widely used expression system following E. coli, Bacillus subtilis is not pathogenic with single-cell membrane and secreted proteins to medium directly.
枯草芽孢杆菌是继大肠杆菌之后又一广泛使用的表达系统，它没有致病性，只具有单层细胞外膜，并且能直接将许多蛋白分泌到培养基中。
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