Methods The minimal inhibitory concentrations (MIC) of cefazolin sodium before and after nanoparticlization to S. aureaus and E. coli. were determined by microdilution.

• 方法：采用微量稀释法测定头孢唑林钠纳米化前后对金葡菌和大肠杆菌的最低抑菌浓度。