the minimum inhibitory concentrations ( mic ) for 100 strains of streptococcus agalactiae varied as follows : ampicillin 0.1 to greater than 1 mg/l , amoxicillin 0.03 to 0.5 mg/l , cephalexin 2 to greater than 16 mg/l , nitrofurantoin 8 to greater than 64 mg/l , sulphadiazine all greater than 500 mg/l and trimethoprim less than 3.9 to greater than 250 mg/l .
C0002680
ampicillin
C0002645
amoxicillin