there were two groups of resistant strains : one group ( ca . 15 % ) , of which b. fragilis g-232 was a typical sample , was resistant to ceftezole ( mic , 100 micrograms/ml ) , cefazolin ( mic , 100 micrograms/ml ) , and cephalothin ( mic , 200 micrograms/ml ) but not cefoperazone ( mic , 6.25 micrograms/ml ) or cefamandole ( mic , 25 micrograms/ml ) .
C0007552
cefoperazone
C0007541
cefamandole