Distribution of inhibition zone diameters of all E. coli isolates (n = 40) not susceptible to third-generation cephalosporins (i.e., second panel of antibiotics).

Distribution of inhibition zone diameters of all E. coli isolates (n = 40) not susceptible to third-generation cephalosporins (i.e., second panel of antibiotics).所有对第三代头孢菌素（即第二组抗生素）不敏感的大肠杆菌（E. coli）分离株（n=40）的抑菌圈直径分布情况。